Hey, Dave, many happy returns to you and yours for 2019!
Fortunately, in my personal opinion, our cars were over engineered so we don't have a great deal to complain about
If you slacken off the retaining screws/bolts that hold the alternator in place, one or two revolutions should do, and if you can get a copper mallet or engineers hammer to the head of the bolt before you completely remove the screw/bolt, that should release the captive/tapered nut on the other side of the bracket that will be pressed against the alternator housing. This should make for easy removal/refitting otherwise it will prove difficult!
Given your experience the rest should be child's play!
Good luck!