1. Metal all the way. I can't do the wood coasters any longer due to comfort issues
2. Movie and popcorn all day long
3. No we haven't but we did do a cruise/white water rafting trip on the Snake River last summer. This included a one-hour cruise on very easy water, then tying up down river to a campsite where they provided a "camp" breakfast with the best buttermilk pancakes we have ever eaten. Then we got back in the boats and did some white water action. It was awesome.