It’s a clever idea. But the coffee maker at a hotel always has a funky smell to the water as they are rarely cleaned and descaled.
But to add some tips: Go to a camping store and get some small 2.5 oz bottles with fold down nozzles. Fill with Olive Oil, Vinegar, Sesame Oil, Soy Sauce. Those can go in the ziplock carry on or use bigger bottles in the checked bags. Then an asian store store for good soba noodles. and pack a few of those in the checked luggage, they’re sometimes portioned out with a little “Cigar Band” around the bundles. Those can be rehydrated with some hot water, dried mushroom and add tofu. Season with the sesame oil and soy sauce. And get some bagged salad (use with Oil and vinegar dressing). Pack a disposable pepper grinder and some good salt in the checked bag. Get some shredded dried sea weed for a topping for noodle dish too.
