Well, mathematically speaking, there is no difference whether or not you are playing one slot or moving around the casino. Due to the fact that slots are built around RNGs, and the consequence of every spin is totally arbitrary, you'll get the same fate whether you play at one slot the entire day, or move around.
On a 6 reel machine it takes 68 minutes for the jackpot to cycle through the list of probabilities. So no, moving to another machine or staying where you were makes no difference. It's all in being at the right place at the right time.