I'm glad that your experience was a possitive one so that you are thinking of returning. I belong to 2 guilds. Each are unique. But both are friendly and supportive and genuinely happy to help out a fello quilter.
Like any other group, when people get to together there can be stuggles of power, competition, and any other child like behavior you can imagine. The best groups are able to work through them.
The groups are as good as the members let the groups be. Be yourself and don't let anyone try to make you be something different.