Looks like mine's about 30 minutes away, no tolls or anything but it'll cost me about 8 bucks in gas round trip.
Might try for both days, but you have to pre-order to get a coin right? So pre-order the Wii U version on Wednesday and the 3DS version on Saturday, I guess?
For those that plan to go specifically to get one of these coins, how early do you plan on getting there prior to the start of the event?