Also, although you may have applied for enroute, you might only get offered tower. Some of us got a choice, some didn't apparently.
I didn't get offered tower, I just told them I'd changed my mind after doing a famil. If you get through the selection process, just tell them what you want.
As far as the fuel expense is concerned, I was a bit annoyed that they didn't pay for my removals to Melbourne, but I didn't have a complaint about how much they paid for my fuel costs to get there. It was around three times what the fuel actually cost.