Just a heads up - as Frankfurt is one of the gateway cities. The city of Frankfurt announced a mild curfew for all restaurants, pubs starting from October 09, 2020. Restaurants, cafes, pubs etc are obliged to close at 22:00 (10:00 pm). It is mandatory to wear face mask in the main shopping ares. The restrictions are in place till October 18, 2020.
Source and additional information on https://www.faz.net/aktuell/rhein-ma...-16988823.html