I find MGM a half day park not becuase you could not see a day's worth but because I find it the hardest to negoitate- with all the show times set it is hard to get to them all in one day and the rides are mostly very popular and you either have to wait, get fastpass or come back so our MGM plan is to pick 3-4 hard items to get throw in a meal a few characters and an easy place or two like millionaire, walt or muppets and then leave planning to return another day or even another trip( there always is one - LOL otherwise I have been very frustrated in MGM running from show to show only to be too late and standing in long lines- you can go to the water parks in the later afternoon and usually walk in as others are leaving especially if it has rained in the early afternoon.