Thanks for your reply. For some reason - the Czech Republic doesn't seem to be included as part of a 3 country trip on my website.
But at least I know I can combine the Germany pass with the Czech Republic pass and be covered. By the way - my husband may qualify for a senior discount - and we may qualify for a discount based on 2 people traveling together. Also - we want to travel first class. I'll have to run the numbers and see which option makes the most sense for us. Robyn