If you have a timeshare and you are bringing guests.....can the guests check-in before the "owners" do? We have guests whose flight gets them to Aruba a couple of hours before we do.

Yes they can check in but I would fax your ok for this (anyone could walk up and say they're your guest) and make sure you receive a reply from the resort acknowledging your request. You can also ask on the resorts website (if they have one) how they would like you to handle this request.

What we do is firstly notify the resort of the names of your guests and then give the guests a letter from you giving them permission to check in before you arrive. That should be enough.

We did exactly what Tina said for our guests who were arriving before us and by the time we got there they were already unpacked and relaxing.

Thanks very much for your responses! Aruba here we (all) come!