If I buy a second cartridge, should it run as a second town just fine, or would I need to do some weird extra stuff to get two cartridges to act as two separate towns on the 3DS? I've been getting a lot of mixed stuff on that, some people seem to say that you need to use a digital copy and load it onto an SD card and all this other complicated stuff, other people seem to be just fine buying two copies of the game and switching between the two, and I don't know who to trust.
To re-emphasize, I'm trying to figure out if I can switch between the two towns on the SAME 3DS, I do not have a second 3DS. I also do know that I wouldn't be able to visit my first town as my second towns mayor or vice versa, but I don't want it for trading flowers back and forth or anything, I just really love villagers and want to have 10 more. I just want to make sure that both copies of the game would work as separate copies of New Leaf, and not just load my previous New Leaf files onto the other game, as I do not want to lose my current town, nor waste money on a second copy if it won't even work as a second town.