I've done both. My oldest was on a new team and we were new to Travel Ball and ended up at Ripken.
Late July I think. It was ridiculously hot and a very expensive trip. We do high level major ball now and the experience back then was great but now I can see it was really just a tournament that we paid a boat load of $ for vs a team price. Ceremonies etc. weren't that great. We went .500 started in the losers bracket and made the semifinal. Competition was perfect for that team at that time, high AA ball. It was so hot at opening ceremonies that kids were passing out on the field.
Cooperstown Dreams Park this year and that was a special experience except that there weren't many good teams there. Every pool play game was a 4 inning mercy for us. Lost in quarter final to another decent team but of 104 only about 10 good teams there. Kids had a blast staying in the barracks. Our house on lake Canadarango was awesome and only about $1000 vs. $350 a night at Ripken. All in all no comparison.
If you don't have ticket for dreams park just go to to All Star Village. I think it falls somewhere in between the two in terms of experience but if you've never been to either, I don't know how you'd know. Also, they have beer (Drams Park is very strict and no beer at Ripken!)