I have done many gigs with 4 or 5 originals bands playing the same stage on the same evening, where it is often impossible for all the bands to do a full soundcheck because of time limitations. Often the choice is made to only soundcheck the band that uses the most inputs on the mixing desk. The previous band I was in usually played without amps and cabs on stage. We had two guitarists with stereo setups, my bass (single XLR), a backing track with backing vocals and synths and a pretty basic drum kit with kick, snare, 4 toms, hi-hat and just a few cymbals. We brought our own monitoring rack that had everything except the drums plugged into it, and from there to front of house. The only drawback to that was the XLRs for the other bands still had to go to their gear and mics. We were often complimented for being so easy to mix and to balance well. Therefore we weren't afraid to play without a soundcheck, a linecheck would often suffice and well within the first 30 seconds of the first song everything would be fine. We did prefer to do a full soundcheck though - and we always tried to be disciplined, without unnecessary noodling.