HoldCart — Cart Reservation

Great app, that does exactly what I need: manage cart reservations while many customers are trying to get the same thing at a shop drop event. Before this app Shopify at times sold more Items than I had available or took items out of the shopping carts of customers while they where in the checkout process.
There are still some things to figure out, but the developer is very fast at responding and fixing issues immediatly. Really happy with the support!