Euro (EUR)
roughly €0.92 to US$1 — and Portugal is the cheapest country in western Europe
Widely accepted, though some places still prefer the local Multibanco network.
Type C / F (two round pins)
230V, 50Hz
Tap water is safe everywhere and perfectly good to drink.
Not expected. Round up, or leave a euro or two. Never a percentage.
Police 112 · Ambulance 112
112 · Works with no SIM, no signal
March–June and September–October: warm, open, and far less crowded
Schengen area. Many passports get 90 days visa-free in any 180-day window. ETIAS has been delayed repeatedly — check its current status before you fly.