Hi Matt
When you create a connection to the cube in SSRS you will need to provide a query of some sort as SSRS does not support dynamic query building the way Excel pivot tables do. However you would not have to write the MDX yourself as the SSRS does have a query
designer where you can drag and drop filters, attributes and measures similarly to how you would in Excel but this would be at design time(When you build the report) and not at run time.