getting home
plan the exit before you go out. 4am you is not a good planner.
The end of the night is when most things go wrong, and it is the part people plan least.
Decide how you are getting home before you leave the house. Not when you are outside at 4am with a dying phone and surge pricing.
Keep cab money separate. Actual cash, in a pocket you do not open all night. Apps go down, cards get declined, wallets get lost.
Leave with the people you came with. If somebody is peeling off, everyone should know where they are going and with whom. Share your live location with one person in the group.
Do not get into a car with someone who has been drinking. Including the friend who insists they are fine. They are not fine, and this is the one on this whole list that kills people.
Text when you are home. Yes, it is 5am. Do it anyway. Someone is waiting to see it.