Rivet city is located on the bottom right corner of your pip-boy map.
It's right there and easy to notice.
guns
you go around asking people in rivet city
Fallout 3 For sure. Especially close to rivet city area.
Rivet City (see the link below).
Pinkerton can be found in the broken (separate) section of Rivet City.
ammo and not vary good guns
The chief guard in Rivet City, (known as Harkness) can be found usually in the Rivet City Market area of the ship. If you have not entered Rivet City yet you can go to the intercom near the edge and talk to Harkness and he will connect the bridge for you.
I think there is one on top of rivet city, the run way
In Fallout 3 to get the wedding in Rivet City is to get ant Pheremons from the Giant Queen Ant, Supposilvely in the Antagonizers lair just north of canturbury commons. Then get the pheremones and give them to that girl that loves Diego. (I can't remember her name).
If in fallout 3 no sorry dude I can say for in the other ones though but u can change your face though Pinkerton in rivet city broken ship deck
Intelligence - Rivet city - Science Lab Agility - Greener Pastures Disposal - Office
You can find ammo in ammuntion boxes or desk's by searching them or you can buy them from megeton and rivet city or from scavangers across the wasteland or in stores
There is noone named 'Adison' in Fallout 3; there is someone named Madision; if that is what you meant. If it is; then Madison is Dr. Li; one of the scientists which your father worked with on project purity. She can be found in the science lab in Rivet City.