If I really wanted to travel light with minimal hassle and almost zero risk of hardware failure, etc - film.
Example - Mamiya 7II and couple lenses AND (if feeling flush) a Zeiss Ikon plus 1-2 fast Zeiss/CV lenses (new CV 50/1.1 for $1100 anyone ?) for low-light work for roughly same as say a used M8 + glass. Compact tripod for bupkus.
Uber-compact, no chargers to lug, no solar chargers for when camping, LONG battery life, batteries at any drugstore, cleaning is a blower and lenspen (no static-charge brushes, swabs, fluids, etc) or t-shirt, film anywhere, etc. A kit that, short of running it over, won't break (and if broken is probably fixable by many camera shops) and (especially with the Mamiya) very nice IQ.
Come back and if ready to move away from it, can probably sell for close to what you bought it for - or sell abroad and just bring film back.
While all might be fine with digital, you just never know. No worrying about banding, fatal error codes, crap on sensors, green blobs, back/front focus AF, etc, etc, etc.
While there are some real benefits to digital in the image taking (e.g. ISO, histogram, etc), the REAL convenience of digital vs film isn't in the picture taking per se, but the post-processing. Sadly the real HASSLE of digital is the multitude of junk to lug around when traveling and the risk of something going south when you're 1500 kms from nowhere and there nearest dealer is in the next country.
The more once/lifetime the trip, the more I would tend to film.
Just my $0.02 worth.