Is it rude to skip a wedding rehearsal dinner?

Lexie

My boyfriend (of 1 year) is in his friends wedding party. The rehearsal dinner is this Friday and plus-ones are invited. I would go, but the problem is that the caterer is a BBQ restaurant and I looked at their menu and couldn’t find anything I could eat. I am vegan.

Should I go or not??

And if I go, I feel it will be very awkward to not eat when they all are.

Also, I thought about bringing my own food int, except the rehearsal dinner is at a very fancy place and I feel sort of awkward doing that.

I need your advice please!!