Yes, they will. And at the same time, they can be so much fun. Kevin and Kyle's party was very low-key and not adult orchestrated, so they had lots of outside play before dark, board games, computer games, movies, and food. Vonna, my boys have graduated from karate chopping games, to "sword fights" sometimes with good-sized sticks they've found, but also with shinai which are practice swords of Kendo karate. All four of my guys love fighting with these shinai, which are made of bamboo so the worst that comes of them is bruising. I'm so thankful the yard backs onto railroad land as it gives them extra space for their games.
Meals with that many boys isn't for the faint of heart. Loud talking, raucous laughter, strange noises are just a part of the excitement. For breakfast the next day, I did request that they be little gentlemen and show me their manners, which they all did. Just couldn't quite take all the noise first thing in the morning!
Once again, I gave thanks that we bought the house with the basement. When we were searching for a home, I thought perhaps a family room off the kitchen would be perfect for our, then, small family. Instead we have a huge room in the basement which contains most of the kid noise adequately. I slept soundly all night long. :)
So next time a sleepover is requested, I won't cringe quite as much as I did this time.