Entrance Systems

I have (2) questions regarding the placement of entryway systems. 1) Our project contains several grade level retail suites. From previous threads, I see that these will likely be considered to be "regularly used" triggering the requirement for entrance systems. These, however, are shell spaces at this time. In order to allow the future retailer maximum flexibility in the design of their space, could binding language be written into the lease agreement calling for either the tenant to install a permanent entrance mat system or a contract for weekly maintenance of roll up mats in lieu of permanently installed mats? 2) We have an outdoor roof terrace on level 2 of the project. Would the door to the terrace be considered a "regularly used building entry" requiring an entrance system? It's a gray area, but it seems that as the terrace is subject to "pollutants" (dirt, dust, pollen, etc.), that an entrance mat should likely be installed. Thanks!