As far as the alternator......you can just ingnore it until it quits......where will you be?
Or, you can open it up every 50-60 thousand miles to check/replace brushes and blow out the dust. Makes them last a whole lot longer. After I got near 100K miles I needed (for piece of mind) to add a volt meter on the bike. Engine off it shows me battery charge and engine running it shows me alternator output. If the battery starts showing much less than 13V while off I replace it. If the alternator ever shows much less than 14V running Ill fix or replace it, but hopefully that reduces my chances of being surprised while on the road.
