Just returned from our very 1st outing. We stayed at a Jellystone in Fredericksburg, Texas. From what I gathered this park has only been open a little over a year, so everything is still really new and the park is amazingly clean. There were lots of family's with kids, but we never felt crowded.
The sites were very spacious and level. The weather was a little cool for the pool, but luckily there was a hot tub there so the kids improvised. I would definitely recommend this park.
I wouldn't recommend the route we took to get there though, we took a 2 lane FM road for a portion of the trip. That added more aggravation than I needed at the time.
I didn't take any pics of the site, but here's a link to the park.
This is wine country for Texas so there are a ton of wineries nearby. One of the best is apparently right across the street from Jelly, its called Grape Creek Vineyard. We are planning to go back to Fredericksburg this next weekend sans kids to partake in some vino. We won't be staying at Jelly though.