Weddingbee boards

We had greeters both places that took care of the gifts for us.  The greeters were good friends that we trusted completely and we gave them a key to our car for the day. 

At the ceremony, they handed out programs and ushered, and anyone with a gift, they took the gift, and whenever there was a lull in people arriving, they'd make a run to the car with the gifts.  (There were other friends to cover the ushering/greeting in the meantime)  At the reception, we had my fiance's sisters and those same friends greet guests, seat them, point out the guest book and card box, etc.  They did the same thing with any packages. 

Point being, if you don't want to have gift tables at both locations, just establish a point person to hang out near where people arrive, and they can take care of any gifts people show up with.  But even though we chose not to have official gift tables, I think people know that weddings are gift giving occasions, and wouldn't think it's tacky to have them anywhere you want that day.