The Berlin to Prague (RJ) train will not run on Mondays during several months in 2026. Of course, I had planned for my friends and I to travel on a Monday, so now I am in juggling mode. The current plan is 4 nights each in Berlin and Prague. (By the way, before Berlin we will be in Leipzig for several days.)
I am considering a couple options. What are your thoughts?
Leave Berlin a day early and go to Prague for an extra night (assuming, of course, I can get the rooms for an additional night). Karlovy Vary looks like a good day trip from Prague during our extra time there. (Advantage, no luggage on the bus to and from KV.)
Leave Berlin a day early, travel to Karlovy Vary for an overnight detour and then go on to Prague from there (by bus). (Advantage, no change in Prague hotel reservation)
I know there are other interesting day trips from Prague, but KV looks like a fun change from the rest of our itinerary.
FYI, our group will be four women—three of us in our mid-60s and the 30-ish daughter of one of my friends.