Ahhh do what I used to do: Slip some Bacardi in to their Kool Aid, wrap in a Papus, strap them to your back and come out and party anyway!!!
I am kidding of course. Hope you can find a way to make it. I certainly hope the little one gets better soon. It's terrible having a sick child. I wish I lived never by, I'm stay with the angel so you could have fun.
<------ use this recipe, always works for me, unless of course they're allergic to cats or dogs
p.s. or you could take Orange fat Cat's advice, she sounds like she actually knows what she's talking about