I have fewer problems with large people in our shop at the sample table, than with families with many kids.
Instead of lunch, they bring them in and the swarm the table.
At a Christmas open house, one family devoured about 3 packages of cookies, 2 bottles (yes bottles) of cider and half a pot of cocoa. Then they moved to the next store and did the same.
The next year we didn't sample and the same group and more just stuck their head in the door demanding- "What free stuff you gots now?" and "Where's the free cookies?" etc.
Some people are pigs no matter what their shape or size.