During my move out west I let my subscription lapse…I don’t want to have to worry about that in the future. Can I purchase multiple years in advance? Full-price doesn’t bother me?
If not that’s ok too! 
Thanks folks.
From what I’ve heard, several folks have done it, both accidentally (these were cleared up by TubaDiva and Jerry) and deliberately, so it’s possible. And I’ve never heard a mod or admin complain (nor do I see any reason they would), so it’s apparently also permissable. Besides all which, one is encouraged to buy a new year’s subscription before the old one runs out, and there’s no qualitative difference between buying a new year 3 days before the expiration date and buying it 362 days before expiration.
Yes, up to 2 years at a time.
your humble TubaDiva