If I have been there, I can give advice on what is good and what hurts my head and I will never ride again. I do not do water parks, but me and friends have been to every Six Flags in the USA except the 2 recently opened, one in OK and the other near Buffalo NY. We are doing Buffalo this year, along with Cedar Point again. Hands down Cedar Point is the best park period in the USA. As far as Six Flags parks, NJ used to be my favorite, until recently more rides there have been hurting my head. Now my favorite Six Flags is the one near LA, CA.
We have been to most major parks, except the Disneys and Universals. We like really good rollercoasters, and drop towers, and not so much the smaller rides. And those parks are expensive, and we like fun and value.
If you buy the passes to Six Flags when they are on sale, you can save a ton if you live near one. Six Flags dining passes are the greatest. I live 5 miles from SFOG, and I am there almost daily for dinner. Saves me a ton of money on food every year. And they do have some healthy choices also, sometimes I do that.
If you do it right, you can really enjoy a lot of parks on a small budget. For example, if I go to the beach, I have to have a room right on the beach, and those are pricey. Amusement parks....I may stay 20 miles away for a awesome room at a awesome price.
This year not doing much, Panama City Beach then Cedar Point and Darien Lake. The hotel on the beach for a few days costs more than last years trip which consisted of SF near Chicago, SF near St. Louis, Silver Dollar City, Busch in VA, SF near Baltimore, and SF Jackson, NJ.
Every park I go to I look for game rooms, not many these days, and the only one I have found pinballs in is Cedar Point.
My favorite rollercoaster is Millennium Force at Cedar Point, followed by Cheetah Hunt at Bucsh Tampa. My favorite drop tower is the one at SF Arlington, and then the Falcons Fury at Bucsh Tampa.
And the first ride that ever hurt my head is the Kinda Ka at SF NJ, and last summer it still did. Top Thrill Dragster at Cedar Point is almost the same thing, and it does not bother me, I love that one.
Also, Dollywood and some other Cedar Fair parks like Carowinds are pretty good also. I do not have kids but do notice sometimes which parks are good for youngsters.
If I have been there I may can give some good advice. For fun I am going to try to do a poll also. Man I wanted more choices for the poll to also have Busch/SeaWorld, and the one I forget the name that owns Dollywood and Silver Dollar City. But I think I got the main 3.