Typhoon Lagoon, first, very close second Blizzard Beach. Take in a picnic, very relaxing days. ;-);-);-)

Then Aquatica, but the won't let you take in a picnic, :-(:-( Very tight IMHO, so won't go back there.

Wet & Wild for thrill rides, but rubbish landscaping. (concrete & more concrete) Not as relaxing.