What are some of the exciting things to do at Neptune?

Well since we think Neptune in uninhabited, there really aren't exiting things to do there, if people don't even live there.

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You might want to take up parasailing. The winds would keep you aloft for days! You could catch an updraft on the 1,305 miles per hour winds and sail about and never touch down. But given the atmosphere is composed of ammonia ice, water ice, ammonia hydrosulfide, and methane ice, I really don't think that would be much fun either.

I think the most exciting thing to do on Neptune would be to survive. The atmosphere is extremely toxic, so you'd be indoors all the time. If you go pack lots of board games, Monopoly might be good to while away the long boring hours.