Re #1: They are very different experiences. No1SXM is strictly sailing; no motor, no music. Just the sound of the water and sails flapping. Limited to, I think, 12-16 people. Celine motors and holds more people and may play music. I guess if I can't remember, it wasn't offensive if they do. Food very different: Celine very upscale and extensive menu, No1 simple but good sandwiches with other treats throughout the day. Peter and Mirian on No1 are friendly and nice captain/first mate. Neil on Celine has now retired and hired a captain, Dean, if I recall. Neil spends his time mingling with the guests and working on social media.

While I think the Celine is pricing itself out of the market, I like both and sail on both each trip.