Maybe you could offer a special deal for the Chocolate Fountain and Disco combined?
Then you can use the wife as a roadie
That might give you a marketing edge on the " competition"
Have you got any client recommendations in writing or feedback emails to show people saying thanks what a great night etc. --or my favourite---give them the numbers of happy customers to ring from previous successful Weddings.
I use this strategy and find it works quite well.
Not sure about the advantages of a bubble machine for a Wedding?
Best of luck, let us know what happens--
CRAZY K