The best tip I leaned in 3 years of corps was:
Don't go anywhere or do anything alone. If you're doing it as a group you can't be wrong, or at least the worst they can do is yell at you.
Example 1.) When at rest stops, make sure you see other corps people. Otherwise the bus may have already left.
Example 2.) When out on the field, and everyone else is playing sonic boom loud. You should join in and match their volume (with a good tone).
Hope that helps, and good luck!