If you are having a hard time getting parties, you may want to consider offering some sort of referral program for your customers.
For instance, I offer a program where any customer will get $10 product credit if they refer someone to me who books and holds a party. Each person they refer, they earn $10 and there is no limit to how many times they can do this. What you give your referral is up to you.
Sure, it costs me a little bit of money, but considering I am getting a party when I didn’t have one before, it is well worth the cost.
I got some nice cards printed at Vistaprint that specifically say that they are a referral card and how the program works. There is a spot on the back where the current customer can write their name and then pass it on to their friend. I give every person at my parties 3 cards for them to pass on.
I also let people know that they do not have to hold a party in order for the referral card to work. I recently had someone who used earned the credit by getting her sister to book a party. Win win for both of them!