Thanks guys...
Actually, the waterfall and slide have only been shot once...like a scratch coat. Next they will shoot it again and really create the boulder shapes. Yes it does have a small ledge cave that you can sit drinks or other items on. It is big enough for my kids to get in and sit, but the plumbing and frame work prevented us from having a complete crawl through cave. I was hoping it would be a little bit bigger of a cave, but the kids like it how it is now, so that's all that counts.
As far as the slide, we are not going with tile, it will be finished of with a type of varish after everything is painted. I am not sure of the exact product, but I am being told it will be slick and smooth! I too have heard the tile is a smooth finish, but it just seemed like a maintenance headache. Maybe I am wrong, but I just visulized little tiles popping off and having to replace them. My wife and I both wanted the natural look, so the painted gunite seemed to be the way to go.
We had pretty good weather yesterday, but no work. Hopefully back out tomorrow to get things rolling again. We were hoping to have a week or so of swimming before the kids started back to school, but the weather has probably shot that tie frame. That's ok though, it's Houston....we can swim up through November!!!!!!