My boys will turn 10 a few weeks after we return from our March trip so they are considered children for this trip. I was thinking about upgrading them to adults for the dining plan if we purchase it. With SPD looking likely for our dates, would I still be able to do that or would I incur additional charges? Also, if I did do this, would they still be able to order from a kids menu if they chose to in some instances using an adult credit? Thanks for your help!