1. This belongs in the Nintendo section. Besides the fact that this is talking about both Animal Crossing games, and only one is Wi-Fi compatible, there's also the fact that what you are talking about has nothing to do with Wi-Fi.
2. Meh, though there are times that it can be nice, for the most part I find it funner just to let the game go naturally. I do time travel, but I mainly do it just to get through the days that Nook's store is closed for upgrading and for getting turnips, I usually can't play my game on Sunday mornings.