Reporting my experience:
I've done still life for a living, long time ago, but travel photography has always been my favorite.
Mostly Asian countries, from Middle East to Indian subcontinent to Far East.
For some reason I always took better pictures when I left with plenty of gears, than when I had just two zooms.
Maybe when I'm loaded taking decent pics becomes imperative
Now I live most of the time in Thailand, and when I leave Italy I always have to choose which lenses I will take with me.
Recently it's more complex, I have a K-1and I also bring a backup body (APS-C).
I don't want / can't shell out some serious money for the new full frame zooms by Pentax, which means I have to make good use of the very good vintage primes I already own.
I always try to have with me a couple of recent f/2,8 AF zooms, but I don't feel at ease with their weight/bulk, and most of the times I go out with 3 or 4 primes.
On average I bring at least 5 or 6 lenses, and every time I curse my laziness (and airlines regulations!) because I miss a certain lens that could prove... oh, so useful!
This is my two cents worth.
I already posted a couple of comments and a few pics about my first travel experience with my new K-1.
Cheers
Paolo