At the LQS in my town, the employees are very condescending towards me and other "younger" patrons. I am in my 30s but look like I am in my 20s. I often go with my mom who is in her 60s. We don't always stay together while we are browsing and they treat her with much more respect. They are very rude to me and if we are together they always direct the conversation to her. If I am asking to have fabric cut they always look at her and ask her how much fabric to cut. This is after I just asked for a certain amount! Ugh! The frustrating part is that I am as old or older than several of the employees who do this. Needless to say, I don't go there often.
At another shop, there is a lady who always tells people her opinion on the fabric they are purchasing. She rarely has anything nice to say and her opinions are rarely solicited. I call her the fabric police. I have actually heard her tell people that they "can't" use this fabric for a border or with this other fabric.
At my favorite shop, the ladies who work there are pleasant and friendly to everyone - even the kids. They were tickled pink that my DS10 was choosing fabrics for himself and even helped him find some. They have tons of fabrics from almost every manufacturer - truly something for everyone. They have a semi-private classroom so you can see in but the class is not disrupted by shoppers. The store is light and airy and they have lots of finished projects down where you can really see them and feel them. If you tell them you just want to look, they are respectful and let you. But they are always nearby (without hovering). And, they offer coupons through their Facebook page!
Good luck to you!
Just the fact that you are researching and asking for ideas tells me you are on the right track and I would gladly visit your shop!