I might be incorrect, but think of merit as a percent chance of you getting a second/third/fourth/etc. tour. So if you have 35 merit at the end of the tour, you have a 35% chance of getting another tour. The more merit you get, the better your chances, though don’t think that just because you have 95 merit that you can’t possibly roll the 5% that says you won’t get the next tour. URB can work like that, hehe.