I just returned from a Rhine River cruise on Emerald with a 3 day extension in Switzerland. (
Cruise The World With Peace Of Mind - Emerald Cruises - Emerald Cruises) There were always active choices available as well as the standard tours. The active tours were hiking or biking depending on location. The bikes were e-bikes.
When deciding which river cruise company to choose we narrowed it down to Avalon and Emerald. We went with Emerald because all gratuities were included.