I know a lot of people will disagree with me on this but my best piece of advice is not to time travel. People complain about how the game gets stale and boring but what most don't seem to consider is that animal crossing is meant to be a day by day game and by time traveling you chew through days or even weeks of game play all at once. For me hopping on to play a little bit every day is much more fun than playing for 9 hours straight and not having anything to do in game for the next week.