Let's say that you are the only qualified Ba'al Tefilah in a small summer community that has just 1 shul. (Yes, it does happen!)
Shabbat starts late (around 8:15 PM, say). You have a disabled child who is on a strict schedule and cannot stay up later. Your wife wants to start Shabbat early so that the family can have the Shabbat meal together before your child most be in bed.
We know that you can't eat or drink before making Kiddush. I also assume that making Kiddush is an acceptance of Shabbat. And, once you have accepted Shabbat, how can you say a weekday mincha afterwards? But the shul is counting on you to say mincha because no one else can do *chazarat hashat"z" except you. (Other cong. are old people who can't stand on the bimah for that long.)
What should you do regarding Kiddush & mincha?
Should you say mincha home, make kiddus & eat, go to shul but have everyone else daven mincha for themselves, then you can say Kabalat Shabbat & ma'ariv?
What about saying the Kiddush in shul? Can or should you do that, even though you already made Kiddush at home?
Any other scenario?