Thank you, I am glad you liked my post. Yes, worms are not too fond of bright light. I am sorry to hear that it would be difficult to care for the worms while on holiday. It depends on the state of the bin and how large the colony is. A smaller colony in a fresh bin with a lot of extra bedding could possibly last two month without care as they can eat their bedding once the food scrap supply runs out. The main concern would be moisture. If the bin dries out, the worms are toast. In a dark space with little air flow and some extra water to tide them over, they might be able to hold out for a long while, but it would be risky. The extra bedding would be key for them to hold moisture and have food to last a while. If you do decide to try it out, I hope you have good luck.