As do FAs, at least on the legacy carriers. I would think that if you have lots of seniority and like a particular route that you could get it almost every time you bid on it. (There are tales of a legendary UA FA who had seniority number 1 or 2, who always flew the same long-haul route.) But, if you prefer to see different places you can bid on a variety of places.

I was chatting with a UA FA recently on a lightly-booked TALT flight, and she said that she liked to go different places and had recently been to Moscow. I don't know how layovers always work, but she said she had 2-3 days there and had a great time.