Take Jingkai Road and go north, cross the newly constructed road onto Zhanzhan Road and turn around at the exit. The Beijing Aquarium has its own parking lot, which is quite large. It's just that the road conditions are not very good.
The aquarium has performances at 11 a.m. and 3 p.m. I don't know if there will be any change during the holidays. Aquarium tickets include tickets to the zoo and panda pavilion, so it will definitely be busy during the holiday.