Do you think it is okay to back out of my best friend's bachelorette weekend?
I can't believe you would do that, are there any worries about this weekend?
I'm worried I am not going to be free in time for that weekend.
If you can't attend an event due to other important plans then your friend will understand. I think they would appreciate you more being at the wedding.
About that, I was thinking of not going to the wedding and coming up with some excuse like something came up.
Well your friend will be disappointed you can be there but if you don't want to go, you shouldn't force yourself to go. You won't have a good time and might make it miserable for the other people.