I left one group because while it was fun when sitting at the table playing a game or looking at the table with things everyone brought to give away or trade and any quilts brought, when that was done the ladies always split into two groups chatting. I've not been good at trying to get into a chat going on. hate being ignored.(even at work) so after three times of that, i quit going back.
more politeness is a good thing. who knows what friend you may make by just recognizing they are actually there. good luck and have fun!