Hey mate,
Sounds like you got it sorted.
Germans love to speak English, so you'll be right. Hel, I've survived over three weeks here speaking English (no prior German skills whatsoever).
TRUTH. Pff my German was better when i lived in the USA. Now I've been in Germany over a year and I haven't had any practice, they hear my shitty accent and switch to English. As long as you have the basic phrases down like "Wie viel.." and "Wo liegt.." right & left, and numbers, you'll be fine. Never be afraid to ask for directions.
"Geht diese Zug nach Itzehoe?" is useful as well. And probably grammatically incorrect.
Last year at Wacken I learned a new word, though!
"Landluft" = literally "country atmosphere", a nice way of saying "everything around here smells like horse shit" hahaha