My Daughter's Birthday Party!!

Hola everyone!! I have a question!! I am having a fourth birthday party for my daughter at my APARTMENT!! Yes APARTMENT!! on thursday. So far via RSVP a lot more people than I exspected are planning on attending, my question is where can I find Party Platters at reasonable prices or does anyone have any ideas on how I can make my own party platters..

Also her theme is Mickey Mouse Clubhouse so does anyone know where I can possibly rent a costume at reasonable pricing!! Thank you!! Her party is at 7:30 at night so even if someone knows a good Party Planning place that sends characters out by the hour at a reasonable price would be good!! Thank you ALL so much!!

Sarah!!!