Beer Trailer - Using Existing Lines on Corny Keg

So I'm getting married at the end of the month and we were lucky enough to get our hands on a beer trailer (cold storage and 6 taps) and of course we're using 3 of the taps for my first few batches of all-grain.

All the lines are set inside and Sankey couplers attached. The liquor store we're renting the unit from seemed concerned that I would potentially take off their existing barb and nut endings that attached to the Sankey couplers. I told him I'd be able to put everything back on but would try and find away to maybe work with what was already in place.

I definitely know what to do if I don't mind putting my own barb and swivels nuts on but is there anything that can be done to work with the existing beer nuts (19/32" I believe) and still attach to a 1/4" ball lock disconnect?

Check this thread out:
https://www.homebrewtalk.com/f35/need-help-converint-kegerator-use-5-gallon-home-brew-keg-255290/

Maybe you could get this set up and a shank to act as a coupler? I'm sure there must be an easier way.

I didn't know you could rent beer trailers. I'll have to look into that.

thanks drocu. a local liquor store has about 3 of them available to rent and a local distributor has been known to rent one as well.

A coupler is exactly what I need but a shank is probably a little more than I want to spend to get there. Thanks for the advice!