Total Confusion
Well, nice surprise for us! The new hotel, the Best Western Royal Plaza Hotel and Trade Center, has a downloadable map of the floor space (not sure how much is going to be used, since I don't know the scale, but it seems pretty big given the pool over there on the left hand side...).
Download it HERE
Origins
While the convention may still be stuck in the 1990s, the convention center is not! They have updated their site with a cool new map you can check it out HERE
GenCon
As the granddaddy of all RPG Cons, you’d expect a lot of maps, and you’d be right, sort of.
GenCon has a map of the current layout of the dealers hall (in case you need to do any shopping). You can find that HERE
The games are spread throughout Downtown Indy, so HEREis a map of all the locations you might need to know about.
Most of the maps are below, but the Marriott has pop-up maps that I can't link to, so HERE'Sthe page you can find them on.
Open Gaming Convention
OGC has changed locations to The Holiday Inn Hotel & Suites, in Nashua, NH. And unfortunately, like most Holiday Inns they don't have a floorplan. But it's not difficult to navigate if you're worried. PLUS they have a pirate ship for us to play on!
Rising Phoenix Con
The folks at the Doubletree sent me a pdf of their floorplan. Here it is for your perusing pleasure.