>>4315235You have a few options with removing people from the frame without ever having to talk to them.
1. Take multiple photos from a tripod as people move around and take the portions of the various photos that didn't have people in them to make a single composite image.
2. If your tripod is extremely sturdy and there isn't a lot of movement from wind, you can use an ND filter (i.e. 10 stops) with a very, very long exposure in the middle of the day to essentially blur away any people. This doesn't work as well for people who stand in one spot for a very long time.
3. Combine the two above methods if necessary, for example to get rid of someone who stood in one place for a very long time before moving.