Planning and priorities. sounds good.
But what about the guys sitting in some basement saying:
"Yeah we had a gig this Saturday but we had to decline. Jim told us 2 months ago that he had a gig with his other band. We couldn't find a sub that could sing lead and play lead guitar."
Blue
Blue, in this hypothetical case, if a band is available for booking next week-end, then most likely either their band is not really a established band, and / or the booking is not that great of one. Jim's other band is apparently good enough to have bookings two months out.
I play in three bands - most of the time.
My main band is my own band with my wife and four friends. We play acoustic Gospel, and have been together for 25 years, the last six or so with the same line-up. I do all the booking, and if we wanted we could play 200 dates a year easy. I have the contacts, and we are well-established in our area. But we only take three or so bookings a month. Everyone in the band has at least two other projects they are involved with. We all have smart phones, and use a Google calender. I check regularly with everyone for "do-not-book" dates.
My second gig is bassist where I go to church. We play Wednesday night, and two services on Sunday with practice on Thursday nights. We have a back-up for bass if I cannot make it. I probably miss 4 or 5 dates a year.
Also, my wife and I joined a start-up CCM band. We are only looking at doing 2 or 3 dates a month, and we are practicing on Saturday afternoons right now.
And of course, my wife and I jam around a bit also, never hurts to network at local jam nights.
I never play in bars. Not making much money. But I love to play, and at 58, my playing days are numbered,.
So for me and my wife three bands are easy, most of the time. We never keep our involvement with other projects a secret, and yeah, we never brag on our other bands to another band we are in. In fact, we try to keep ourselves humble towards all our fellow band mates.