We have been twice in August, which is classed as high season. We found that the park was fine until about 11 am and then it got busy. We did all the popular rides before 11 and the others after 11. About 3pm we would walk over to the studios which had less crowds. You can then go back for the evening fireworks once the studios are shut. It is managable with planning and I never found it as crowded as some of the days at the MK in orlando. Have you thought of Marriott time share? They have one next to DL, we toured in one time and it looks like a really nice complex. They also provide shuttles to the parks.