Brilliant Or Incredibly Dumb?

My husband has a group of friends that are pregnant or have kids. They had this idea to rent a house for a week over the summer and bring all the kids (ranging in age from a few months to 2 yrs).

Chris and I signed up, and are really excited. However, I realize that in my naiveté, I may have just signed up for a week of sheer hell with about 6 infants and 2 toddlers. Hayden is not included in this of course because he'll be perfect.