Hi Sky
A personal viewpoint which may be out of date. My experiences with breweries back in the eighties was that they wanted high quality work at the lowest rate possible. Then they wanted you to work unsociable hours, often through the night, with no premium payable for these hours. And of course they wanted extended credit terms.
I feel that, if market conditions are still the same, you need a Truck Mount. If you need to work through the night, will you work the day before and the day after? By all means make enquiries, but read the contract carefully if you decide to go ahead. Ask your local pubs what time of day they have their carpets cleaned.
Safe and happy cleaning:)
Ken