Try doing that same trip in the rainy season when the road floods and you're stuck for 14 hours, then tell me the 60 dollar flight wasn't worth every penny. Plus you lose a whole night of sleep on a bus, and that's a day of your trip gone.

The "never dry" rule comes from old timers running HSS tooling where heat buildup would kill the edge in seconds. With carbide and 6061 you can get away with air blast because the chips carry most of the heat out and the material is gummy enough that coolant just makes a mess. If you're getting glass finishes at 8000 rpm and the tool life holds up, keep doing it, but watch your cutter after a few hundred parts to make sure it's not wearing faster than you think.

My sister's kid talked me into the Laneige lip mask and that was the one thing I should've skipped. Coconut oil and shea butter on my chin at 11pm was just asking for clogged pores. The dewy spray was fine, but that lip stuff migrated everywhere while I slept. Four days of tiny bumps later and I'm back to plain old Vaseline.