If you have a contact number for the guild president or a membership person, should they be that large, give them a call and introduce yourself. My group is on the small side less than 40, and folks just drop in. There is another guild in town that is 300 plus and they have a membership chair, but are warm, welcoming and you can drop in or look at their website and choose to just come to special speakers or any of the smaller "sub groups" who are working on special projects or techniques. Quilters are generally real kind folk, join them.