We were just heading up and down the hotel strip in Laughlin. We did head to Bullhead City in our rental car one day, but the balance of our trip we were drinking and using Uber/Lyft/Taxi. I only saw one water taxi, but we only spent 30 minutes along the river. We were there when it was slighly cool and crazy windy. Lot's of Vegas cancelled flights due to winds during this stretch. I never saw a single person waiting at a dock for the water taxi.
I ended driving from Phoenix with a friend who was going to surprise me in Laughlin. He decided to tell me the day before since all airlines where warning about Vegas flight cancellations due to the wind. My friend flying into Vegas from Boise had his flight cancelled. He ended up flying to Denver. His next flight wasn't going to leave for 5 hours, but he noticed another Southwest flight that had been delayed six hours due to winds, and they were just boarding. He jumped on that and finally arrived Laughlin about 9pm after the 90 minute drive from Vegas. It was a long day for him after driving 2.5 hours in the snow from McCall, ID to Boise.