Hi John. I always fly BA Belfast City Airport to Heathrow, meet a London-based mate and hire a car at Heathrow, driving through Tuesday night to be in the queue for gates opening Weds morning. We do a food/cider shop in a 24hr Tesco in Basingstoke on the way past. Works well. I never have a problem carrying everything by rucksack and staying under the airline 23kg luggage limit (including chair, bed, tent, clothes etc etc). It’s all down to realistic packing for a week. It’s a pain having to stop to buy any camping gear – just live within your 23kg and you can pick up camping essentials onsite! The food/beer is the issue and the hire car makes a shop doable, but t’would be expensive if you’re travelling alone to Bristol. If you’re not planning to bring your own food & beverages, just fly to Bristol (presumably Belfast Intl with Easyjet?) and train/coach directly to the farm. Have a good one!