When I bought my first two red eyes (Agalychnis callidryas), I kept them in a quarantine "hospital" tank for over a month. It is much easier to observe how much they're eating, pooping, and any changes in appearance than in a regular vivarium. Also, if they had been sick, I would have had to to take apart the vivarium and disinfect everything. That's why it's important even if you buy in a group

The darkness should help them be more comfortable and wake up. They're aware of what is going on even when they're sleeping though, so if you do not have 3 sides covered, they will do their best to stay sleeping. I had one red eye that wasn't comfortable waking up until I covered 3 1/2 sides of the tank. Then, over time, I slowly removed it so that only 3 sides were covered. Even now, their tank has 3 full sides covered or they get too stressed out.