C.E.
unless you have someone to hang with the whole time, it's going to feel like a waste of time for you to be there. first off, i think you should ask these same questions of your boyfriend. maybe he has a solution. maybe the bride and groom can arrange for you to meet some of their guests before the wedding and make sure you have a seat with them. let your boyfriend ask the bride and groom permission for you to go to the rehearsal dinner. some people can be quite picky about who attends. and find out what the appropriate dress for each occasion is so you avoid feeling more conspicuous.