Tucson has two tribal casino anchors that out-of-towners and locals both search for by name: Casino del Sol and Desert Diamond. This page is a straight head-to-head using the same public registry data we track for every Arizona venue — Google rating, review volume, posted hours, city, and property type — snapshotted as of September 15, 2026. Arizona doesn't yet have documented in-person reviewer visits in our testing program, so nothing here is a first-hand account of either floor; it's a comparison of what's publicly measurable about each property today. We'll update the numbers as the registry refreshes.
The Two Properties, Side by Side
Both properties sit in the same "Tucson & Southern Arizona" region and both are tribal casinos, which puts them in the same regulatory category and rules out any need to compare a tribal floor against a sweepstakes-style site — that's a different comparison entirely.
| Casino del Sol | Desert Diamond Casino (Tucson) | |
|---|---|---|
| City | Tucson | Tucson |
| Type | Tribal | Tribal |
| Google rating | 4.3 | 4.1 |
| Google review count | 15,864 | 9,866 |
| Posted hours | Open 24 hours, every day | Open 24 hours, every day |
Casino del Sol carries the higher rating (4.3 vs. 4.1) and close to 60% more reviews on record, which generally signals a larger, longer-established review base rather than a verdict on any single visit. Both list identical round-the-clock hours across all seven days, so neither has a documented closing time to plan around.
Review Volume: What 16,000 vs. 10,000 Reviews Signals
Review count isn't a quality score by itself, but it is a rough proxy for how long a property has been operating at scale and how much foot traffic funnels through it. Casino del Sol's 15,864 reviews put it among the higher-review-count venues in our full Arizona registry of 27 tracked tribal casinos, trailing only the Phoenix-area properties with the largest volumes (Talking Stick Resort at 26,634 and Desert Diamond's West Valley location at 23,327). Desert Diamond Casino Tucson's 9,866 reviews are still a substantial base — more than double what several smaller regional properties in northern and eastern Arizona have accumulated — but it's clearly the second-most-reviewed option of the two Tucson anchors.
Desert Diamond does operate a second Tucson-area location worth knowing about if you're cross-shopping: Desert Diamond Casino Sahuarita, about 20 minutes south, carries a 4.2 rating across 4,838 reviews. That's a smaller footprint than either of the two anchors above but a higher rating than the Tucson city location.
Hours: A Non-Factor Here
If your day-trip plan hinges on "will it be open when I get there," neither property forces a compromise. Both Casino del Sol and Desert Diamond Casino Tucson post 24-hour operation every day of the week, according to the current registry listing. That's consistent with most of the larger tribal properties we track statewide — 24/7 operation is the norm rather than the exception among Arizona's higher-volume casinos, though several smaller regional properties (in Camp Verde, Prescott, and Payson, for example) do post limited overnight hours on weekdays.
Which One Fits Your Trip
Neither property has a documented edge in amenities, game mix, or player rewards in our current data set — those aren't fields we have verified numbers for yet, so we won't guess. What the registry data does support: if review volume and rating are your proxy for "the busier, more-reviewed option," Casino del Sol edges it. If you're specifically anchored in central Tucson and want the Desert Diamond brand, the Tucson city location is the closer comparison point to del Sol; the Sahuarita property is the better-rated Desert Diamond option if you don't mind the short drive south. Beyond that, this comes down to which brand and neighborhood you'd rather be in for the day — a call this data can't make for you.
What We're Still Missing
To be direct about the gaps: our registry doesn't yet carry verified data on table-game mix, slot machine counts, players club tier structures, dining options, or on-site hotel rooms for either property. Those are the details that typically decide a trip once the basics of "is it open" and "is it well-reviewed" are settled, and we'd rather flag that the data isn't there yet than guess at specifics we haven't confirmed. If and when documented reviewer visits are added to our Arizona coverage, this page is the one we'll update first.
FAQ
Is Casino del Sol or Desert Diamond bigger?
Our registry doesn't carry verified square-footage or gaming-floor-size figures for either property, so "bigger" isn't something we can confirm. Review count is the only volume-adjacent metric we have, and Casino del Sol's is higher.
Are Casino del Sol and Desert Diamond open 24 hours?
Yes, per the current posted hours in our registry, both Casino del Sol and Desert Diamond Casino Tucson list 24-hour operation every day of the week, as of this September 15, 2026 snapshot. Hours can change without notice, especially around holidays, so it's worth a quick check with the venue directly before a late-night visit.
Which has the higher Google rating, Casino del Sol or Desert Diamond?
Casino del Sol, at 4.3, compared with 4.1 for Desert Diamond Casino Tucson (and 4.2 for the Desert Diamond location in nearby Sahuarita), based on the review data in our current registry.
For the full write-up on one of these two, see our Casino del Sol profile. We haven't published a standalone page for the Tucson Desert Diamond location yet, so for now this comparison is the most detail we have on that property. If tribal casinos in other parts of the state are more your speed, our profiles for Talking Stick Resort and Casino Arizona cover the Phoenix-area anchors, and Spirit Mountain Casino covers the western Arizona side of the state.
