Please don't flame me for this (and I hope it doesn't come across the wrong way), but I think spreading the magic is Disney's job.
That's not to say that we aren't happy, polite and helpful at WDW, but you start getting into some weird situations when you try to make magic for others at WDW.
We have helped others get where they need to go, hand out a few leftover FP's (back in the paper FP days), and offer a few tips/suggestions to newbies on the buses, give up bus seat, offer to take a photo so that the whole family can be in it, etc... but that's about our limit. If it happens organically, that's great, but we don't try to be the Disney magic dispensers...
We're just so dang happy to be there ourselves and enjoy some magical/memorable time together.
Dan