I work in McDonalds and the only suitable place I can think of is the seating area. The tables and chairs are basically booths, I'll have to get out to stand up. My question is can I pray whilst seated and with my shoes on? I've read in a few sites that it's permissible to pray with shoes on as long as they don't have impurities on them. I'm not exactly sure what it means by impurities, does it mean by dirt in general? Time to time stuff like drinks and liquids drops on my shoes.