E.N.
Dear Tammi,
I would not do bobbing for apples, especially with Swine Flu and the susceptibility of a child who is afraid of the water, it's just not a good idea.
Because many girls that age enjoy active play, I would suggest an activity, depending on the girls, doing nails, a hair-do over.
If you are adverturesome, take them bowling or ice skating.
I know I had a Western theme party one year, with a live pony, a pinata (filled with candy)(hung from a tree), then after the pony left, they played "Simon Says" and the leader had them running all over the yard and they were "giddy". I can tell you, you still have time for next year.
Also, you might want to try pumpkin painting, less active, but still entertaining. Having music to go along with painting might be a good idea. Ask the librarian for help, I am sure that they will find something fast.
Have fun!
E.