I think that sounds lovely. One of my showers was a lunch for about 10 people at a Tea Room and it was perfect. I had a wonderful time and actually felt less awkward opening gifts because it was more intimate and I could still sit at the table.The hostess paid for the entire tab and they brought in our own cake.
FWIW, I had three other "traditional" showers and we didn't play a game at a single one of them.