Welcome aboard Revatron, there’s a seat for you right down front. With years of non-revving under your belt you’re no doubt keenly aware of the uncertainty of non-rev travel in the best of times and know that planning to circumnavigate the globe on back-to-back flights in 5 days is quite the undertaking. Plus, in the present environment with staffing shortage, changing schedules and equipment - banking on a certain aircraft is not 100%. (It’s funny, I was just talking with friends that want to fly on AS’s new Star Wars plane – trust me, it’s the “Millennium Falcon” or bust!)
My advice is to plan, have back-ups and enjoy the flights, and do go downstairs on that LH flight to LAX.
The Forum has had quite a few members that have done trips where airplane type was a major factor, but none have checked in recently. I will see if I can pull up something.