Are Dark Room Tents Worth It?

familycamptent...
Dark room tents are designed to block daylight, and in some of them this goes to up 98-99%. This is the main function of this design. With this you can definitely sleep longer in the morning.
But in a direct daylight, the interior of any tent will become warm. There are several other factors that may help in reducing the heat inside of such a tent, but one should not have unreasonable expectations. If it is warm outside, it will be worm inside as well. It is as simple as that.
The reality is that dark rest tents are usually not dark from outside, so it is not the dark material that may make them warm. This fact is frequently overlooked by those who complain about them.