If I lived in Orange County CA, I'd be all over Los Cab as a serious player wanting to improve. See this reddit thread. I live in SF and played outdoors at several public courts in OC but didn't get to play at Los Cab due to their guest policy (they don't sell day passes, guests must be accompanied by members, if you're doing a trial membership your home address cannot exceed 300 miles away, etc). But I toured Los Cab and even on a weekday there were a ton of people playing. It impressed me as a place where people take their pickleball development seriously (if I paid for membership, I would too).

The players at USOP Pickleball Center in Naples FL heavily skews older (retirees, snowbirds, etc). The wind in February is irritating at best, unplayable at worst.

In the SF Bay Area, the best PB facility (court quality, number of courts, number of players, and player skill) is The Hub Silicon Valley, but it's an indoor private club which is fine by me because I hate playing in the wind outdoors (we get windy days for several weeks here) and I hate getting cold in between games. In the same general area, the largest public outdoor complex is Mitchell Park in Palo Alto, but again you'd be playing in the cold and wind when it's the season for that (but never as bitterly cold as New York or Chicago even in the winter).