Eight common Iceland activities compared by what the day depends on, the question to ask before paying, and a sensible backup. Check operator terms and current conditions; use the first-row planning link to compare the wider options.

Reykjavík plans usually go wrong by keeping too much, not by starting with too little. When wind, rain, a late check-in, or tired legs cut the usable day, protect one good main activity and remove the part that creates the most movement.

This is a drop-first list: seven common situations, the piece I would remove, and the part I would keep. Check the live weather, opening hours, and transport before leaving.