We camped at Tres Rios as part of their marketing at Camping World where you get 3 days for free if you listen to their 90 minute membership sales pitch. Well the sales pitch ended up being almost 3 hours, the netbook pc that they provide for free is a piece of junk. The park overall is OK, but pretty old, all sites are dirt and while they do have trees, all the shady spots were taken as they don't have very many 50A sites in the shade. My recommendation is that if you don't want to drop about $9K for a lifetime membership, don't waste your time as there are better alternatives in my opinion. And, the gifts they provide for wasting your time are junk.
This is my second time to stay at this park. It is an ok park with a good pool and nice people, but now that Thousand Trails is allowing permanent sites, it's starting to look like a trailer park (refrigerators and freezers outside, all kinds of junk sitting around sites). Also, while it has 50 amp, it only has a dozen or so. The upsetting part is that there were a bunch of travel trailers and 5th wheels that only need 30amps, in the 50 amp sites. So we had to park in a 30 amp site with our 40ft, 3 air-conditioner Class A. So in the 100+ degree days, we could only run one unit and inside reached 90 degrees. Will probably come back, but not in the summer.
I've stayed at this TT location before. Used to be our favorite, but now that they are allowing annual leases, it's hard to find a site. There were no 50A available and only a few sites with full hookups. The facility is very run down and maintenance has been deferred for a long time. That said, the pool is still pretty good and the mini-golf is somewhat OK. We will come back, but only because we live close and we have the TT membership.
This is a great place to stay. The only complaint I have is that my cell phone did not have good coverage (Sprint PCS). They have a nice park for the kids and nice hiking/biking trails. They don't take reservations so if you are staying the weekend, try to get there by Thursday. Also, you pay at the site, they will come around in a golf cart, so just drive in and find you spot.
This is a crowded park with tight gravel spaces. They are narrow, maybe 6' between my slide and the neighbors slide. A bit tough to get in and out of as well. It is convenient to I-20 though, so not too bad for an overnight stay.
The staff was friendly, but the park is pretty old. There are small roads to get to the park and it is actually a bit tight getting into and out of the parking area. The pad we used is in bad shape, not very level and is broken in many spots. On the positive side, it is very quiet and very low cost place to stay.