try 40 mg and put yourself in an akward situation to see how it works, I would do this before your wedding, that way you know if you need more for your wedding day. It is safe to take up to 120 mg + doses at a time, but you wont get better results from it, the max you really need in a single dose is like 60 mg maybe, then you can re dose 40 - 60 mg every 4 hours if it's a long event. I AM NOT A DOCTOR! PLEASE TAKE MY ADVICE FOR WHAT IT IS WORTH, ADVICE ONLY! I can tell you that from personal experience this med WILL NOT harm you, just don't go nuts with it, if you take way to much like hundreds of mg's in a day it may slow down your heart too much. Just be smart about it though. This is a drug that famous people from actors and singers etc. have been taking for a very long time to help them get over stage fright, it's a very common anxiety med. Oh and there are a lot of different beta blockers out there, my experience is with propranolol in particular, I have no experience with other beta blockers, so this is the one I would recommend.