In fairness, when I have seen some of the crowds waiting in the main atrium or by the departure gates and been almost knocked off my feet by excited children or huge Disney stuffed toys, the lounge has provided an oasis of peace - as long as you aren't sitting near an American businessman booming into his cell phone !You don't have to fight the queues for beverages, drinks or loos either.
I think the replies in this thread have summed it up... but here is my view...
The MCO Delta Lounge is nothing like a Clubhouse. It's the same as any "business class lounge" in the USA. For that read "less crowded than the main terminal concourse - but don't expect to find a seat, let alone adjacent seats. Free drinks, snacks of sorts [pretzels / cheese & crackers] and toilets that are in better nick than the ones in the main concourse." Other than that, not a lot to write home about.