the part of doing the restore power quests at night is a fantastic start and this is one way of taking it a step further. after completing 3 or more restore power quests for the respective trader another guaranteed reward to go alongside the casino tokens and player chosen rewards is a special access card that will only work at the trader its received from. these access cards will be different colors to determine which trader you got them from, for instance a black access card will be rewarded from trader Hughe as black is extremely common with weapons. I've always thought about ideas for how to access traders shops at night and this is my best idea.