I had an indoor food shop where I had to count customers, do timings and take pictures of boards that were towards the ceilings where there was no way to play off taking the picture. Also had to take a pic of the receipt while in the store and any promotional signs in the store.
This was a 4 week, same day, same time assignment. On my third visit, I left the register without the receipt. Sat at my table. Timed how long it took someone from line to receive their food, then went to take a pic of my receipt... Oh @#$%&. Forgot it. I went to the counter to ask for it saying something about needing one for business. The cashier said, "no problem. I saved it for you." Then, plucked it from the side of the register and handed it to me. Well, needless to say, the 4th and last trip, I took pics, did timings and counted customers like normal but all the staff just smiled at me. Busted? I think so.
MSC's, think about it. Asking us to do a shop the same day of the week, the same time of the day, for 4 weeks in a row usually means the same staff will be there. I enjoyed the assignment but know I was busted.