From late September to the first week of November, a Saturday at Mercier's runs like a small festival. The car park fills, staff direct traffic in the overflow field, the market building is shoulder to shoulder, and the bakery queue snakes back past the produce. None of that is a criticism of the farm. It is the predictable result of being the best-known orchard in a county that receives most of its annual visitors in a six-week window.
If you want the orchard rather than the event, three things work.
Come on a weekday. A Tuesday in the same week is a different place entirely, with the same fruit and the same doughnuts.
Come at nine. The farm opens early and the first ninety minutes on a weekend morning are genuinely calm. By eleven it has turned.
Come in a different season. Strawberry picking in late spring and peaches at the height of summer draw a fraction of the autumn crowd, and the market, bakery and cider house are open the whole time.
If you are coming on an autumn Saturday regardless, accept it, park in the overflow without complaint, and do not plan anything immediately afterwards with a fixed start time.