How many times can I enter the Corridor of Chance per day?
You can gain access once per day (NST)/per Neopet, using one key per Neopet. So, like most dailies, you can visit once every 24 hours. However, you can take each of your (up to) four Neopets to the Corridor once daily. Each visit, for each Neopet will cost one Key to gain access.