BOG is CS at lunch, so no ADRs are possible. There are apparently plans in the works to use a feature on
MDE to place your orders in advance of your arrival at the restaurant at lunch time- here's a link to the current thread:
http://www.disboards.com/showthread.php?t=3149450
The line ups are not really horrible. They may look long, but generally move very quickly. Many people report that from the time you get to the bridge until you are actually finished ordering and entering the dining rooms it has only taken 20-30 minutes at most. I've also seen reports of much shorter lines than expected. I believe they stop serving lunch at 2:30.