1. Dehydration
2. Noise, lighting
3. Unfamiliar venue
4. No one else you know and who can help out.
5. Length of time. Some NTs are willing to spend 3+ hours together, talking strangely irrelevant and uninteresting things between themselves. It becomes exhausting pretty fast for Aspies.
So before going into these situations, be prepared:
1. chart out the venue in advance, including women's rooms.
2. drink lots of water, to stay hydrated and provide excuse to go to women's rooms where you get to relax a bit.
3. Is there anyway to block out noises? Ear plugs are sometimes an ineffective and too obvious solution
4. Always go with someone close, so he/she can help you engineer an escape
5. Always schedule something else 1 hour after the party event, so that you can say "Unfortunately i have this other thing to go to"
Anything to add?