Man I should have done that my TRU didnt have the event Except the other TRU is like 1 hour and 30 min away...Suggestion to those who want to go: CALL BEFORE GOING.
Just get your local TRU's phone number, call it. It'll give a usual spiel of opening and closing times and say something before saying to just wait on the line to be connected to a live person. Ask them if they are holding the Pokemon Arceus event, they should be able to tell you. If they have no idea what you're talking about, then you'd best go find another TRU to call. :P
Thankfully my TRU near me was able to answer last night, and I arrived around 8-9am (They opened at 7am today what the hell), the help desk directed me to the Electronics area, and they said it should be up and running (Since no younger kid would have their parents drive them up that early for a pokemon lol, I just had to go to the stupid DMV for other stuff. =3=), and it took just a few moments and I got my Arceus.
I LIKE location based events because to do wi-fi events I have to come all the way home on a weekend and have my dad take the protection off our wi-fi, which while it doesn't take long it still sucks to have to come home from college for a few second download. :/ And my college is an hour away sooooo, yeeeaaah. Granted I came home to go to the TRU by my house rather than my dorm, but I had other things to do this weekend at home anyways. (As for college wi-fi, it requires log-in, which is impossible on a DS)