1. Look into any community centers or churches. I'm surprised a Gamestop would be willing, especially if they don't have enough TVs and/or the employees are incompetent.
2. The things I learned in the newspaper business are the same when coming up with advertising fliers. You need at least these essentials:
Event name
Date
Location
Start time
Web site, e-mail or phone (perferrably just one of the three, I'll explain why later on)
You really don't need anything else. If people want more info, they can either go to the site, e-mail or call for more info.
Now, make sure that everything is spelled correctly. In your first flier there, you have "Super Smash Bros. Braw." People like to criticize over the littlest things, even if they "get it."
What I like to do is have one icon that is easily recognizable. Any
Nintendo tournament, I'd have Mario, Koopa or Ice Climbers. Just one is fine and make it big.
Also, make note of the font size. People have told me that the size importance should go in this order:
Event name -- has to be the biggest, think of it like 1/5 of the flier
Date
Web site
Location
Start time
If you were to take a flier and look at it from a distance, you should know at least the event and when it's going to happen. If you stick an 8.5x11 on a light pole and people drive by it, the person should at least say, "Hey, it looks like an event that includes Nintendo, taking place on (insert date)."
Also, if you were to look at it from a distance, say if you were about 20 feet away walking toward it, the icon should be the biggest driving force of the flier. In the first flier, I see the Smash circle; that's OK if you know Super Smash Bros., but think about those that are just trying to enter the tourney scene. In the second flier, the world is the biggest draw; I don't see how that relates to a Smash tourney. In the third flier, I see three small icons: a Samus, Capt. Falcon and something that looks like Predator

Finally, color is very important. If you have the chance to make it colored, then make sure that it's very attractive. I've never been sold by people that have told me that red draws people in, but w/e.
If you're unable to have color, that's where having the character icon comes in.
OK if I think of anything else, I'll let you know.
--GCII