When I started with them, I saw only a few shops, and no hotels. As I recall, I introduced myself to one or more of their staff who had a table at an early IMSC conference, asking about hotels. I explained that I had a lot of hotel experience with other MSCs and was disappointed not to have access to their shops. One of the people gave me her business card and asked me to email her with a reminder. Within a week I was seeing hotel shops. I now do as many a year as rotations and distance allow.
A couple of years later, my sister bewgan MSing, and signed up with them. She mentioned not seeing any nicer dining shops, so I told her to email the scheduling dept with an MS resume and ask to get a chance at more "advanced" shops. She did so and almost immdeiately was offered a sort of "test" shop. She now treats herself and husband to several nice meals per month.
Lesson: be proactive in asking to be considered for more kinds of shops, substantiating the reasons that you consider yourself to be ready for them. We all need to market ourselves to our MSC client.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.