Wharf houses and fjord air
Tap water is excellent — among the best in the world. Drink it everywhere; don't buy bottled (a bottle runs €4–6). Carry a reusable bottle.
Not expected — service is included. Round up or add ~5–15% on the card terminal for good service; no cash-on-the-table custom.
Drive on the right. Toll roads run on AutoPASS; fuel and everything else is expensive. Oslo and Bergen are transit-first — a car mainly matters for the fjords.
sourced — translations from published sources; corrections come from user reports
Free to start. iPhone first — Android close behind.