XBOX 360: ok, so ive been into the the strip before and im level 28 so its not like its my first time trying to enter the strip. Anyways, the lucky 38 suite is where ive kept all of my unique weapons and stored all of my ammo and whatnot to save room in my inventory. i left the strip for a while but when i went back, it said the NORTH GATE NEEDED A KEY? i tried loading my last save and autosave but its still not working... and now i cant make it into the strip... sad face.... please fix this!!!!!

I heard someone had this glitch before and they got back in with the NCR monorail thing, maybe you pissed off the strip to much or something? More details about the quests you did, how much you gambled, people killed, stuff like that would be helpful to find the problem. Maybe you'll be able to get back in if you bought the passport from or maybe you don't have the 2,000 caps required.

I had this happen in my game too. The monorail should work or you can kill one of the securitron gatekeepers and take the key from the body( pickpocketing might work for this as well but I haven't tried)

Yeah, kill one of the securitrons and loot his key.