George and Dragon

Works fine with Brave browser on my Mac. Not tried anything else.

And fill your water tank!

Of course!

Sorry, yes, I missed the macerator whirring from my description.

That would be where the internal load is greatest so makes sense to me.

Blue isn't advised for pumpout toilets - like Tony says it kills the aerobic bacteria which are the ones you need to prevent smells. Our holding tank is under the bed; the flush process goes: water pump runs and water flows into bowl, water stops running while pump continues (presumably refilling a small header tank), valve opens to allow bowl contents into holding tank, short pause during which the water pump stops then water flows into the bowl (pump restarts) for a few seconds before the valve closes and water continues to flow until the level in the bowl is usually just above the level of the outlet tube, water pump continues to run as before. You're welcome We don't have to do this, boat is often left for several weeks between visits.

01709 is the dialling code for Rotherham. Which doesn't mean very much but might indicate a location.

You're probably safe up until the point where you enter your card details...