H.L.
What not to do: Plan a lot of activities. At only one year old, their attention spans are very small. Plan on cake, gifts, and then let them play. They will get very tired of the *to do* list you have planned (cake, gifts, all the while smiling for this house full of people focused on them). I tried planning way too much for my son and we ended up just doing cake, gifts then handing out goody bags. Next year, plan on activities.