A dawn start makes all the difference to day one, so BnB the night before is a waste of money. You’ll be leaving too early for your lavish breakfast, won’t you? Edale hostel is a long walk in the wrong direction, the opposite of what you want to achieve, and often full of noisy groups. After a refreshing pint in the Nag’s Head, an easy walk to pretty Upper Booth cuts a useful mile and a bit off the standard first day which, unless you’re already hill-fit, is pretty arduous. A chance to shake down your gear and practice pitching your tent. Yes, I’d practised in the garden but trust me, it isn’t the same.
Importantly, if the small campsite at Upper Booth Farm is full, unlike most Pennine Way sites they will turn Wayfarers away. In summer and school holidays you need to book by telephone, probably leaving a message, which will be returned efficiently. There’s alternative camping at Edale. Eat before leaving the village and carry breakfast and lunch for Day 1.