Please know a lot of kids are like this andI have no doubt your school has this before. We knew this was going to be an issue for our youngest and spoke with his teachers (yes, he has an IEP but this isn't one of his accomodations). They gave him a set of headphones to wear during lunch. That made the noise level tolerable and he didn't get overstimulated or freak out. There are aides in the cafeteria helping kids make choices and to help them with their lunch money/number. There are also aides roaming around helping kids with straws, opening milk, getting a forgotten spoon, keeping the peace, etc. In K, the kids are given a snack. Past K, we've had written into the IEPs that our kids are allowed a mid-morning or a mid-afternoon snack as well (which we pack). This has worked out well for us. HTH.