Don't waste time trying to get every last combo of grandparents, siblings, and cousins. Invariably your little nephews will run off, his grandmother will get tired of waiting, and everyone will end up frustrated. Instead, put together a short(!) list of the must-have family shots you want and then take one big family photo with everyone in it. Do it this way and you not only buy yourselves more time at the reception, you also free up your photographer to capture the more candid shots from the day. Also you can greet your guest at the tables after the formalities, and have your photographer follow you around for a quick shot with your selects.