Airline Baggage Regulation / Flying with Bikes

How important is it to remove pedals? My pedals are pretty stuck, cant get them to budge an inch, can I just leave them like that or will it damage the bike if I travel with them that way?

alan key or pedal spanner?

you need to make the handle longer... if alan key you can put a 15mm ring spanner over the end of the alan key to give yourself more leverage. if it's a spanner you'll have to improvise with something else.

also, take the pedals off first while the wheels and chain are on so you have something to push against.