Legal. I presume so. Otherwise it could not have been done.
But, if someone did do these things, and said up front that these things were being done (eg, if the topiary and bull-nosed verandah was rented), then legally there would not be a problem.
If you told people up front, (eg, in big letters at the front of the full-colour brochure), would that be unethical?
(of course, if you did not say so, the would not be ethical, and possibly illegal- from a non-lawyer's opinion!)