I’m thinking about going to try out one of the parlors on Archer in Chicago.  

What’s the procedure to go to one of these places? I see Orange Spa suggests where to park.  
Are all the places storefronts?  
Do you have to wait outside long?  

Complete newb when it comes to this

Most of the places are storefront. It is better to call and schedule in advance so you don't have to wait.