Will each tour have reduced numbers to ensure people can socially distance themselves?

Yes they are.

Yes

Yes, they are operating at half capacity I believe.

Yes they are. They hand sanitizer everywhere. I was on the top deck and there was about 4 on the top deck. There is a crew member wiping down the seats and railing as much as possible while on the boat trip. All the crew wear mask.

And they're very good about sanitizing.