Actually no. The aluminum is the same temperature as the water.
The firebox is set inside the tub so it can heat up the tub very quickly.
The stove is not too hot under the water and the fence is more for looks rather than protection
As long as it takes you to go and get your hose to fill it. The tub comes pre-assembled. It takes about 20 minutes to place and secure the cedar on the outside, which is not necessary for structural integrity. You can roll the tub to any level surface, fill with water, heat and be in it that same evening.
3-5 hours depending on the temperature of the water you are using. Once it has been heated up, it holds the temperature fairly well as it is insulated so it generally takes 3-5 days before the water cools off completely.
Everything you need to use the tub including:
A scoop is provided with your purchase of the tub that is angled at 90° to allow for removal of the ashes.
The drain is located on the bottom of the tub, underneath the firebox.