Ok so my future mother in-law and myself have been debating this topic. I feel that since we are asking are guest to fly out to Cancun for our wedding, then we should invite them to the rehearsal dinner. She thinks that it should be the bridal party and family. But we have a small guest list, about 40 people. So that means that about 30 people will be at the rehearsal dinner and 10 wont. What is your opinion?