ok so i made my cupcakes yesterday and iced them this morning (8am) with RI. its now 12:40 and the icing is still sticky and not setting up at all. its kinda hulid today and i dont know what to do the party is at 3 ....

Perhaps try blowing a fan over them?

Put them in the fridge?

Please clarify:

You used royal icing to ice the tops of the cupcakes????
This is not the best choice for cake icing. Royal icing is used for cut out cookies, flowers & decorations, but not the primary icing on a cake or cupcake. If this is what you did, it could take days to dry (oil from the cake keeps it moist, as well as the sheer amount of RI used).

OR

You iced the cupcakes in buttercream and then piped something on them using RI???
Depending on the thickness of what you piped, it could take a long time to dry, but again, may never completely dry because it's soaking up oil from the buttercream under it. In this case, you would pipe the royal decoration on wax paper and once dry (often takes a day, or so, depending on humidity), apply it to the buttercream iced cake.

HTH
Rae