My wife and I got married in January, and we did a two week Honeymoon in Orlando. I hate to say it, but we were actually tired of theme parks by the end of our trip. We had saved IOA for last, and, even though there were no lines, only rode DD and Hulk once. In hind-sight, I don't know what came over me. I had at least planned to ride each front and back. Instead, I just had this vague sense of relief, that we had finished our last park.
I would guess that after the first week, we had actually reached our limit.
Maybe we should have trained first. Start with three parks in a row and work up to Orlando.