Serving

Here's a small example of a cultural difference we're learning. At your typical American party, the appetizers or snacks sit on a table with little plates or napkins, and each person serves themself when they wish, to the extent that they wish. Not so here. Here at these parties (or even at any celebration following church), all foods and drinks are passed. Usually it is the responsibility of the host to bring the sandwiches or empanadas or popcorn or soda to each person where they sit, and to make these rounds several times with each item. People will even take just one potato chip at a pass, expecting to grab more a few minutes later. If you leave food on a table with plates (as we have learned), it will not be quickly eaten. That is literally considered "gringo-style". I'd be curious to hear from others who have lived in a different country - how does party food work there? Passed? Self-serve? Other?