I will walk on it after 7 days. I'm using the Minwax polyurethane that is a water-based, oil modified mixture. The can says it can be used as a floor coating substance. People have been using polyurethane instead of wax on floors for a good 25 years or more with great success. They just don't tell others about it. As a bonus, paper floors are easy to repair. You just add another piece of paper and coat with another layer of polyurethane.
The down side is how long it takes to lay the paper flooring. It took me a full day to mask, paste the paper and leaves, and put on the first coat of polyurethane in that small trailer. That doesn't include creating the 'leaves', which I did while watching television nor am I including the last 5 topcoats of polyurethane.