We will be docked at pier 2 in Bremen and I would like to get to Bremerhaven to visit the Emigration Museum there. Can one walk out from Pier 2 or is it one of those commercial piers where you have to take a shuttle? How easy is it to find a taxi at Pier 2 (which is next to the big shopping center with Primark) to get to the main train station in Bremen early in the morning? We will docked overnight so I can head out early. Which would be the best stations to use at each end of the journey? Thanks for any advice.