At least during irregular operations, the staff at the lounge often have the ability to reschedule you onto flights or routings that regular staff can't (due to

At least during irregular operations, the staff at the lounge often have the ability to reschedule you onto flights or routings that regular staff can't (due to inexperience or due to privileges). If bad weather results in multiple cancellations, being able to walk up to the agents in the lounge and have them help get you onto a rescheduled flight is often very much worth it.