A: Pressure treated plywood can contain a lot of moisture which wood likely just get trapped under this rubber flooring. Since this flooring can’t be damaged by water, it would be fine to use overtop the PT plywood.
A: Yes, but you'll want to be very careful when choosing an adhesive. Make sure that the adhesive you buy is rated for vinyl and pressure-treated plywood, as well as any external conditions you expect, like low- or high temperatures, moisture, and heavy loads/weight. As always, read the manufacturer's instructions on the adhesive and follow them to the letter.
A: Yes, but it us truly not cushioned in any manner.
A: It depends on what part of the structure you'll put it on: it wouldn't work well on a slide, but it's a great mat to go underneath the slide. This flooring can be cut to size and provides excellent slip resistance. Depending on the underlying surface, you may want to use an adhesive to make sure the vinyl won't move. It fares well in the heat and cold, but you may see some discoloration if the product is left in direct sunlight for extended periods of time.
A: The recommended adhesive for this material is an acrylic based vinyl adhesive. You will need to make sure that your adhesive is appropriate for your subfloor. For aluminum, you will want a pressure sensitive adhesive (PSA) designed specifically for this use.
A: This flooring is intended to be laid flat on garage or other floors. If you intend to glue it to a wall, you'll need an acrylic-based adhesive that is appropriate for use with aluminum surfaces. Confirm the product available at your local Home Depot for suitability.