What time does the second performance star?

There is only one... 8:30 pm

There is only one show after dark the performance starts at 8:30 there's one 15 minute intermission about Midway. There is plenty of food and drink in the facility they rent out cushions and binoculars as well.

One show. 8:30.

There is only one and there is a small 15 min intermission.

That is correct .. only one show at 8:30