I use to do magic in a bowling alley on a regular basis. Quite often the building layout makes it difficult to seperate party-goer from bowling alley patron, however this gives you an opportunity to market yourself for free.
Have some business cards with you for sure. Are you a magician/clown? I've found that TT stuff is great, as well as Sponges, some of the newer alleys with neon lights lend themselves to some improv D'Lite magic as well.
Here is a bowling ball & pins balloon hat design.