When Sims are inside on a Residential Lot they will take of their Shoes (Unfortunaly also slippers). Be aware Foundations count as inside no matter if they are a Patio etc.
This set includes the inaccessible market stalls from the 128 set! But not only are they just your ordinary market stalls, they are cutouts – just like windows! This allows you to customize the inside and build them up however you want!