plenty of parking. however they do have a dedicated megabus section you can park in so to be safe i would always just print that thing they had you print when you bought the tickets, like a pass or something and just left it inside the window where someone could see.

just make sure you get there early cause megabus is wild wild west lol. i don't know if things have changed but when i was taking megabus a lot to go up to nyc it was first come first on basis to get on the bus. don't matter if you already picked your seats or what not. lol that's why i always used to refer to it as the wild wild west of busses