Are masks required during cave tubing with cavetubing.bz?

[coontech]

I read the entire website for cavetubing.bz and I am confused because it says you have to wear masks.  Does that mean just on the vans/busses or do they want you to wear masks on the river, too?

[jas283a]

3 hours ago, coontech said:

I read the entire website for cavetubing.bz and I am confused because it says you have to wear masks.  Does that mean just on the vans/busses or do they want you to wear masks on the river, too?

We didn’t go with them, but saw them at the cave tubing. Either it’s a new requirement or for the van/bus because we saw no masks on the River at all.