Hi,
we have often called in to a CP about 10 - 11AM and ask how much to 'buy' a shower.
We have successfully haggled on a few when the price was over the top, Strahan wanted $5 each, to which we countered Bicheno only charges $3 each and they have water restrictions.
Mid to late morning usually means the showers have just been cleaned and not many residents are using them.
If they have a coin operated laundry we may use that as well, but would offer to pay if it was a freeby.
At Alice Springs one time the free solar powered showers were cold by the time I went for a shower, so I took a bucket to the laundry where the water was still hot, and jury rigged my own shower.
cheers