Although I didn't intend it to sound that way, by your response I think I still offended you and for that I apologize.
I like to know the details too, but really, the deck you board is not one of them. Much of the time it has more to do with the equipment at the port than anything else. The port may not have an access portal that reaches high enough on the ship for example.
I will tell you this....whatever deck you board on, don't go to the elevators in front of you (there will always be an elevator bank near the entrance). You'll be waiting for a while. Instead, go aft to the next elevator bank and you won't have as many people to contend with. Normally we go aft to find elevators since the most forward elevators might be locked out so they can deliver luggage.