Agreed with posters telling you to take the UG. Think it's a noble gesture, but isn't this based on the premise that the folks up front don't deserve to be bothered and the people in back don't mind/don't matter?

If anything the people in first will have a higher chance of getting to sleep, more experience dealing with the noise (higher prevalence of noise canceling headphones), and as mentioned there will be just a lower number of people affected. Also isn't there a chance your child will be better behaved with more food and a bigger seat?