It says first come, first serve. I really like to reserve the most scenic, most convenient best RV sites in the place. The time we're planning on visiting is Tuesday, April 14th thru April 19th. Is this high season or will the place be fairly empty? Are there any strategies to getting there early like camping just outside and then booking early in the morning? Is this necessary? Remember I'm a product of Florida and was raised to basically hibernate during snow bird season, LOL.