I've written this before, in fact many times before. Oh, well. Here goes, again.
I gave up on the '50s several decades ago. A 50 has too long a 'throw' for my liking. The last time I used one was in Indonesia in 1993, with a Nikkormat FT2, that camera, a 50/2 Nikkor (one of the old ones), hood and one UV filter was my entire kit for three wonderful months of travel in Bali, East Java and the islands of the Java Sea. I took a few thousand images, mostly Ektachrome. And sold heaps. I've not since had a good sale year to reach what I earned that year as stock and publishing sales. Except in 1970 when I first went to Bali, did mostly B&W and sold even more. Back then images taken in Bali had a ready market, but now you can't give them away, if you doubt this just Google "Bali photos" and learn for yourself...
Onwards. My travel kit is now a Nikon D or Fuji XE with two lenses, in 35mm film parlance my pair of optics is the 28 and the 85 (or a 180 if I want to do more stealthful images). I could easily survive with a 28. My next preferred length would be a 35/2.0. I own all these lenses so it's a matter of easy choice for me.
Apart from the discipline involved (also dare I use that dreaded word, "minimalism"?), it's an easy kit to carry at my age. All of it goes into a Lowepro bag and into my backpack. No fuss, no bother, no last-minute dithering and rash decision-making or later regrets that I didn't have the right lens at the right time in the right place.
For me now travel is more the experience than the image. I reckon we all reach this point in life. It took me fifty years to get here, and I'm enjoying it.
Whatever kit Raid takes will ensure he gets all his usual superb images. So bon voyage. And happy holidays...