Sorry, I can't provide you with accurate information about Dadonghai Youth Quality Education Base in Pudong New Area, Shanghai. However, according to the search results, the base can accommodate 1200 people at the same time, and it is speculated that there may be multiple rooms. At the same time, the base provides a number of indoor military activity classrooms, basketball courts, football fields and other infrastructure, and it is speculated that there may be public toilets.

It is suggested to contact Dadonghai Youth Quality Education Base in Pudong New Area of Shanghai directly to obtain more accurate information.