well it depends. IF it is real ecstasy you will know how your roll is. but anyways, you should just drink water throughout the night slowly. it is possible to overhydrate and be dehydrated. it might also be hard to piss.
no more than 3 -4 16oz bottles per night of rolling. A gallon or more and you can start to have problems. If you're not drinking alcohol 1-2 bottles should do it.