Best answer by Airgetlam
However, if you're dead set on it, I'd recommend that you take the BRIDGE with you. Connect the BRIDGE to the router at the party venue, and connect your phone to that same router. Play your music as normal.
Note that it's likely that there will be a lot of breaking up in the signal to the speakers, mostly depending on how far the speakers are from the BRIDGE, and how many people are near.