Some of our guests have already mentioned that they plan to make our Saturday wedding into a whole weekend getaway by staying both Fri and Sat nights (the ceremony/reception venue is an hour away from most guests). The hotel we booked can accommodate everyone for two nights and it's totally fine by me --- but unfortunately not everyone staying over Friday night will be invited to the RD, which we plan to be just close family and the wedding party with their dates. Our guests coming up Friday night wouldn't expect to be invited to the RD, but I would love to be as welcoming as possible by inviting them to join us at the rehearsal dinner site for post-dinner cocktails at the bar, or something.
If people are staying Friday night do I have any obligation to host them or do anything special? Is there a proper way to invite people to join us after the rehearsal dinner?