I would make an appointment first. Ray's is very popular - a good sign in my books - so you need to know when they can do the work otherwise you could have a wasted trip. If you don't already have the starter kit, you may want to stop in, learn which one will best fit your needs, and make an appointment at that time. They're very knowledgeable and helpful; I believe you'll be satisfied with your experience with Ray's. They're also great with support afterwards!
Mouse is right. I've gone up there before to get a system installed just to be told to make an appt
Thanks! Your answer is awaiting moderation.