I have tickets to go to a comedy show this weekend. Will it be loud? I will be wearing my earplugs.
You should definitely go, and if the comedians are any good you may come out feeling a whole lot better about yourself! Nothing beats great company and a good laugh. Like others have said, just take earplugs with you incase you need them.
Isolating yourself from good times like this for the rest of your life will make you feel terrible and your tinnitus will only get worse if you do, not better. Do not let it control your life to this extent, otherwise, you'll be stuck here forever asking permission everytime you want to go somewhere.