From an oldie who has been on the road (on and off) since the '60s - and is now 72, and still traveling, often for months at a time in Southeast Asia...
Yokosuka_Mike (22) and Ko.Fe (23), among others, have hit the proverbial nail right on the head - less is best.
In the '80s when I was in my 30s with more energy than sense, I took the entire kit lot, everything but the darkroom sink - on one journey across Java, Indonesia in 1986 I had, in one bag, a Nikkormat with four lenses, a Rolleiflex, AND a Linhof with two film backs and three lenses. Plus a tripod and of course, film. To this day I wonder how I survived that journey - for the record, I mostly used the Nikkormat (an FTN as I recall) and now and then the Rolleiflex. The Linhof got used a few times but produced some of the best landscapes I've ever taken of volcanoes in Java. In the end, I vowed to never, ever do that again, and to this day I've (more or less) stuck to this rule from the '90s on.
Since 2012 when I retired, i've managed at least two journeys every year with a Nikon DSLR (initially a D90, then a D700, now a Df) and at most three lenses. On occasion when I've felt the urge to shoot film, I've carried a 1960s Rolleicord Vb with a 16 exposure kit and a minimal accessory kit (lens hood, 1-2 filters, tripod mount) and of course, film.
I've been on the move since April this year with the Df and the 24-70 kit lens. No film camera. Before I left Australia for Brunei I lucked into a truly good deal with a fab 2nd hand MacBook Air, into which I now download my day's images, and that's about it. The Air is the best laptop I've ever owned, full stop. As for my travel photography, other than the occasional image I send to friends, I no longer bother with post processing on the road - that will be done when I return home.
As I'm now 72 and while healthy, not as energetic as I was even a couple of years ago, in future I plan to follow Yokosuko_Mike's excellent advice and take only a Fuji X100F, which to my mind is the best camera ever for on-the-roaders, after any Leica, which obviously many of us (certainly I) cannot afford.
As someone else has said, go, enjoy, experience everything you encounter along the way, and shoot many images, but don't stress over the gear. Life is too short and the angst is not worth it. Travel photography is purely recording images, after all.
Oh. And do keep us informed regularly as to how you are doing and how things are going for you as you move around. For most of us, vicarious travel is (almost) as good as the real thing...
Bon voyage to you!