I voted carrots because the option I would take is not there. I would explain the situation to the venue owners and offer them the duet option. If they want to cancel, that should be their option. Also, it sounds like this took you buy surprise, were there warning signs?
Yes the warning signs were there. Our main solo player who plays fiddle, told us recently that he is retiring from gigging due to hearing issues and tinnitus but committed to play out the schedule through August. He's tried ear plugs and IEMs but nothing is working for him and he's worried about losing his hearing.
As an interesting side note: last gig he showed up completely unprepared, all frazzled, and I loaned him a Rolls PM50 that I'd just purchased as a back up, still in the box. At the end of the gig I asked him how it sounded and he said "great".
The next weekend I put that same Rolls PM50 on my pedal board and plugged into the mixer to test run the IEM feed and got nothing...silence. Then I read the manual and realized it was shipped set for stereo and the dip switch setting had to be changed for mono feed (with needle nose pliers), which I did and then got full IEM signal (we send a mono line feed). At that moment I realized that when the guy borrowed my Rolls he was getting nothing in his ears and had either lied to me or thought he ws hearing the feed. Strange for sure.
Anyway, he didn't show up for rehearsal last week, then sent out an email this morning saying he's not playing the remaining gigs due to having to move his son to college, which is going to take at least two weeks of his time. Seems he would have had that on his calendar a long time ago. The guy's been problematic since joining the band 2 years ago and now he's bailed on us.
So he's dead to me now.
I asked the BL to contact the venue first on the calendar and see if they are ok with a smaller version of the band since we've played there a few times before and are probably expecting a full band. But I've also locked in a guitarist who can cover the solos with ease, just for back up.
I'm inclined to cancel but the BL want's to play the gigs. The music would have been all original material but now it's going to be a mix of more popular originals and covers. Personally I don't like diluting the band's resume by playing covers but this is what it's come to.
When these last two gigs are behind us, no matter how they play out, this band is in the history books. It's so tiring trying to work with people who are problematic, filled with issues of one sort or another, can't balance their schedules, or cannot commit to the project.
I think, for me, this is the end of needing a larger rig and it's time to cut the inventory down to something small. Watch for classifieds coming soon for some great Ampeg gear.