I ended up finding these cute little mustache and glasses "masks" for the kids to wear, and surprisingly the boys loved it. We did easy snacks and drinks and had a cupcake cake. Unfortunately he only got to blow out two candles because the windy was just to windy. (imagine that)
I do have to say I am excited for next year and maybe even plan a themed birthday party for him. Or on second thought I will probably slow things down a bit and worry about my youngest sons birthday instead, cant forget about him!