For stations that have pumps parallel to the road, any lane will work but I prefer the one closest to the road. These are the stations I pick first.
For stations that have pumps perpendicular to the road, use the outside pump. I always ensure I have enough room to swing in and out before committing to a pump. Worst case is you'll need to back out but I've never had to do it.
On long trips I start looking for gas at about 1/4 to 3/8.
If there is a station near the campground, I'll wait to fill up while out site seeing and maybe get a car wash.
Just a little question for families... Did you ever notice that everyone jumps out to use the bathroom while Dad has to wait to pee to fill up the tank and then they wonder why it took so long?