We are in our Early 70s and fairly active. We have 5 nights before cruise leaving Amsterdam and wondered if following will work: Flying in to Brussels, train to Brugge for 2 night stay then train to Amsterdam for 3 night stay. We will have cruise luggage (one piece luggage plus one carry on each). Also, I like to say we are bike riders, not cyclists,,in other words, we like easy and flat. We would like to take easy bike rides. Are trains manageable for inexperienced.? Any suggestions would be appreciated. We will have the 5 days beginning July 15.