We’ve done the Polar Patios a few times. It’s splurgy of course, but generally speaking we enjoy them. I like having the dedicated/secure “home base” for the day with some shade (note, while most of pretty shady, there are variations in locations). The locker is a plus for valuables, as is the ice water/cups (they used to bring a cooler filled with Dasani bottles but the ice water is now in a large dispenser).
The attendant is nice to have for drinks and food, but in my experience the attendants often have a number of cabanas so food/drink service can be a little slow at times. Sometimes (especially in this new era of mobile ordering) it’s just easier to handle things yourself. But sometimes it can be very handy as well!
I probably rate the price as a little high compared to the value you get (very subjective of course), but for the right group type/water park style guests, I think it can be worth it.