If your in an arcade that has glory holes, then any time you have to sit in a booth next to a hole, is a work in patience, and expensive, check for booth lights over the door, a light means the occupant is watching a movie, supposedly, empty booths on either side could mean access to a working GH. Now as to sitting or standing this is usually not as important as whether there is someone on the other side of the hole. Look at the hole is there an eye at the hole, is there a dick sticking through the hole, or are they sitting down watching a movie, now the big question, do you want to suck or get sucked, fucking is usually another area altogether, or first things first. If you want to suck stick your finger through the hole circling the hole and even make a come here sign helps. You do this if you see them standing stroking their cock. as that usually indicates a desire to be sucked. If you are the one wanting to be sucked and u see the finger in the hole or perhaps a tongue, you can normally slide your cock into a warm wet mouth receiving whatever expertize the sucker can give your cock. If you have never sucked cock before you can practice on vegetables and fruit, note only use safe didlo's in your ass as vegetables have been known to cause tearing internally. However even rookies can enjoy whatever clean cock comes your way.
Now if you are at an arcade, and you are in the hallway, some man catches your eye, you may want to scope out their package, you know the look up n down, then enter the booth lighting the light with a few tokens/bills whatever, and watch the hole if you hear the door next to you open, when someone enters the adjacent booth, if you want to suck you wait till they make a move, usually exposing themselves is a strong hint they want satisfaction, or exposing yourself to them if their eye comes up to the hole and you want satisfaction. Sometimes it's more chance than design, you get a little of both, and have to set boundaries as to what you want or will do, and allow for yourself to surprise you by agreeing on the spur of the moment to something you were not going to do: then all at once you want it, as lust takes over your senses, and you surrender to a cock up your ass, or sucking a cock instead of just touching it.