Wishing your sister a great time cruising with Deilmann, Ted. She's going to love it, especially if she's a foodie. Dining was superb on our cruise. Which itinerary will she be on?
You can purchase tours, individually, on Deilmann. Touring is not included in the fare. Tour costs, as I recall, were reasonable.
As Deilmann caters to a predominently European clientele, touring with an English speaking guide yielded smaller tour groups and often times it was just my husband, Alan and me, as many opted for one tour a day, rather than 2. We took as many tours as were offered and were happy that we did.
I hope you will report back after she returns.