If children can sell over priced lemonade and little "what nots" then age shouldn't be something you pay much attention to. Yes

Not a CPA, but in most circumstances you should be able to, yes.

This is primarily (Read: exclusively) by using them for long-haul (European or Asian) airfare in premium cabins, paying careful attention to redemption rates.

Do you have toys and an RV?

That small size makes it difficult, and if you decide to go 100% remote on management you will lose the U-Haul opportunity, which is undoubtedly part of your purchase price. 

when it is in good shape I don't think it hinders any renters, but it's also not uncommon to see them get banged up, cracked, and otherwise rundown and then they look pretty raw and unappealing.I'd say if you're able to keep it looking good over the long haul it could be a solid option. 

I recommend building a “success library” of books and listening to podcasts.When asked if they wished they had done anything differently along the way, most (older) successful real estate investors lament “I wish I had starter sooner” or “I wish I had bought more”.If you are in it for the long haul (20+ years), real estate can be very forgiving.

If you are flipping for the long haul find a reputable contractor pay promptly especially when you do find a good contractor.

Rent a U-Haul and go around and grab them up when you arrive.

My properties are all rentals and I'm in it for the long haul, so not particularly concerned.