I have a question, one of my FI's good friends got married in Hawaii (had a very small ceremony/reception), and we were not invited to that. But, now they are having a casual reception at a park with friends and family that were not invited to the small ceremony. There weren't actual invites sent out, he only sent out an invite on Facebook. So, I was wondering if we needed to bring a gift? If so, they didn't register anywhere. So, I'm kind of stuck. I feel like we should maybe just bring a check? Any suggestions are appreciated!