Current Itinerary for my husband and I for our first trip to Germany from the US is as follows for Late August :
Day 1: Berlin Arrival late PM
Day 2: Berlin
Day 3: Berlin
Day 4: Berlin
Day 5: Berlin to Nuremberg via train (Possible Erfurt Stopover)
Day 6: Nuremberg
Day 7: Nuremberg (Bamberg Daytrip)
Day 8: Nuremberg to Mittenwald via train
Day 9: Mittenwald
Day 10: Mittenwald to Munich via train
Day 11: Munich
Day 12: Munich
DAY 13: AM Departure Munich
Train travel was the initial plan between all locations but I am considering a rental car from Day 8 to Day 10 which would cover from Nuremberg to Mittenwald and the surrounding Alps areas and then return the car upon arrival in Munich. I thought a rental car could give us flexibility between Nuremberg and Mittenwald for a some short stopovers and flexibility in the Alps to explore some nearby towns. Does this seem like a good idea or would it make sense to just stick to train travel? If car rental is a good option I'd love suggestions for interesting stops between Nuremberg and Mittenwald. Thanks in advance.