We stopped here on a Holland America Lines (Veendam) cruise and did this tour on our own. You can book it online or at the dock. The tour started at 10 AM and lasts 3 hours (another one starts at 2 PM); and the desk (by the boat) opens up at 9 AM to buy/get your ticket. We paid 320 NOKs each with the senior discount. I'm not sure at what age the senoir discount starts; however, my wife is 61 and she got it. The 320 NOKs is around $55 USD. The cruise ship charged $125 pp for basically the same exact tour. The boat that took the cruise ship passengers out was probably packed full (it holds around 125 people) our boat had less than half that. The boat was roomy and comfortable (inside and topside). There were limited seats topside, but lots of standing area there. The boat's restrooms were clean and the toilets flushed. The tour boat was within easy walking distance from where the cruise ship docked. The narrration and the boat's PA system was very good. It was a real nice tour.
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