All the water parks are great for the little ones they have lots of baby pools and slides. My daughter is five and has been going to Orlando for two years. Blizzard beach has a good area for under fives, i've never been to wet n wild. Typhoon lagoon is good but not so good for the smaller ones as blizzard beach i would say. Good luck with the wedding!! Our anniversary is 1st September (14 years!!!)