The shop that hosts a yearly retreat I attend is in Ladner, which is a fun little area to visit.
http://quiltedbear.ca/
IF you want to drive an hour east there is Hamel's in Chilliwack
http://hamelsfabrics.com/ Langley and Abbotsford both have a shop owned by the same company
http://www.agreatnotion.com/ Coquitlam has
http://www.quiltedtreasures.ca/ there may be a few I've missed, BUT if you are wanting to walk I think the only shop IN Vancouver is the one on Granville Island, called the Cloth Shop which I posted a link to before.
I don't belong to the guilds but they have an active Modern Guild
http://vancouvermodernquiltguild.ca/blog/ and a few other guilds
http://www.vancouverquiltersguild.com/
I'm actually an hour out of Vancouver but I know those 2 guilds show contact people on their link and they could give you more info for sure. Have a wonderful trip!