Ok, I am digging back into my brain over 20 years ago. Bear with me.
I did an EF tour when I was 17. Went to Austria and Germany. Had no problems whatsoever.
When we were in Innsbruck, we stayed in a small hotel that was very basic. We had a continental breakfast (roll, butter, juice, coffee) and that was provided downstairs in the hotel. We skiied every day in Austria so we ate often at the ski lodges for lunch. Dinner was always with our EF group. lunch always on our own.
I remember some Renaissance sort of restaurant for dinner where we ate off of a wooden wheel plate with a spork type thing- typical German/Austrian meats dinner.
I remember some local restaurants for lunch where we were on our own.
I got sick from my dinner in Salzburg- again, on our own... some of us ditched skiing and took a train there for a day with a group to do the Sound of Music tour and wander around the city. (we had a chaperone with us)
I have no recollection of meals in Germany except for the Hofbrahaus for dinner one night. We were at an Omni hotel in Munich. It was my first ever 5 star hotel.
Flew in and out of Frankfurt. took a double decker bus from Frankfurt to Innsbruck. They didn't have food on the bus, just soda.
The whole trip was seamless from a hotel/transportation standpoint. We had all of our dinners mapped out before we arrived and we planned lunch on the fly. Obviously, you can do much more lunch planning now with the internet. We just wandered around until we found places to eat.
Oh and we had a very strict curfew at night. If we weren't in by 11pm, we were flown home the next day at our parent's expense.