Did another quick bit of testing today.
New (ish) 11k prestige beacon, unlikely to be reached other than by a portal behind a locked door (its buried in the middle of nowhere in particular) in a 60c/visit settlement. It had a couple of visits by my other characters during construction a couple days ago but that was about it.
Dragged 20 characters there and the results were surprising.
It was a new beacon so none of the characters had visited previously, and the beacon owner (as usual) had no other beacons in that settlement, to cut down on those pesky variables.
The footfal given by each guinea pig (while my guy kept looking at the beacon and collecting as each visitor entered):
| Test Subject | Footfall | Test Subject | Footfall |
|---|---|---|---|
| 1 | 96 | 11 | 84 |
| 2 | 96 | 12 | 84 |
| 3 | 96 | 13 | 84 |
| 4 | 96 | 14 | 84 |
| 5 | 96 | 15 | 84 |
| 6 | 84 | 16 | 72 |
| 7 | 84 | 17 | 72 |
| 8 | 84 | 18 | 72 |
| 9 | 84 | 19 | 72 |
| 10 | 84 | 20 | 72 |
So, with 20 tests, each visit being ~5 minutes apart due to travelling / switching, if time happens to turn out to be a factor, every single visit yielded more footfall than the ‘nominal’ 60c per visit from settlement size, but it seemed to go down progressively after a number of visits occurred.
I wonder if that’s intentional due to some sort of unpopularity buff, as the beacon had practically never been visited before due to being new, or if it was bugged and getting way more than it should, or what exactly happened.
I’ll try to run some more tests over the next few days, feel free to suggest things to test for if you’re interested in this sort of thing. 
I’ll try to get at least some of those visitors back after 24+ hours but before 5 days, and also some more new visitors, to see what happens when its mixed.