I've read a lot of debate on the forum about the GRP, I did the math and it was cost effective for me and my wife, especially given that they are 25% discounted online right now. Here are my planned trains (2014 dates)
27.09 - Frankfurt Airport to Wurzburg HBF
28.09 - Wurzburg HBF to Nuremberg HBF, Nuremberg S trains in town
(car rental)
03.10 - Munich HBF to Koln HBF (afternoon in city), Koln HBF to Bacharach
04.10 - (KD Cruise to Braubach), Braubach to Bacharach (via St Goarsharusen ferry/St Goar)
05.10 - Bacharach to Frankfurt Airport.
I specifically liked that we don't have to have reservations given several ICE trains are available, the risks of arriving late at the airport and the early morning (7am) train from Munich to Koln. I want some flexibility in times, but the routes are set. So I ordered the 5 Day Twin 2nd Class pass (279 euro), entering that my start date would be 27.09. The promotion online does not say reservations are required for ICE and that travel is valid until 31.10. The pass I received in the mail has explicitly printed on it that reservations ARE required for ICE, IC and several others and that travel is only valid until 30.09. That date obviously doesn't work for me given the days in Oct and that my start date isn't even 5 days prior to the end of the month. I placed a call to the DB office in Germany but no English speaking online sales rep was available. I'm currently awaiting a return call, but I wanted to put this out there to get others' experience. Has anyone else gotten the GRP on promotion and had the travel dates printed not match? What is the point of having the GRP for great flexibility if I have to have reservations for most trains ahead of time? The reservations costs also significantly alter the math which says this plan works. There are multiple places on the DB site that specifically say reservations are NOT required (except on ICE Sprinter and night trains) but recommended when using the GRP. Can I make reservations just before boarding the train? What are the chances DB actually calls back?! I really thought I had this figured out but what a headache it appears now. Any other help greatly appreciated - especially anyone with an English speaking friend at DB or way I can email them. Euroaide US office says they can't help with online reservations.