Our trip was a success, and I wanted to thank everyone for all the help and patience they extended to me during my questioning period.
Jetlag is a killer right now, but I will get over it.
The one person in our group with major health issues was able to enjoy his trip. There were no hassles whatsoever when he took a large refillable bottle with coconut water, and another refillable bottle with a protein shake. Security in Houston did not blink an eye, nor did they require the doctor's letter. They did inspect the food and drinks, but that was it. I heard one of them saying "poor man."
Munich looks like a fun city. Salzburg was lovely but too hot. Saw everything so won't revisit. BO was overrun by tourists, and some loud and miserable ones at that. Most weren't Americans, so no complaints about ugly Americans.
Thanks again.