This is a combination of a highly edited "journal" and a long trip report.
The only route pre-planning we did was to check tour books, mark the interesting things on the maps (Michelin 1:250,000) and generally connect the dots. We made no pre-arrangements for lodging or events. We "winged it" as it were. We had a departure date and a return date, and that was it.
I traveled with my then 24 year old son who is a very strong cyclist, plus another not-so-highly-powered cyclist. Generally we would go at our own speeds and regroup at major route changes or places of interest -- or, tea/scone/meal stops. This usually averaged every 1-2 hours. For the most part, we ate out of grocery stores. We indulged in pub grub or restaurants for our evening meal. With my son on a grad student budget, we economized wherever possible without denying ourselves as many interesting sights and sounds as were available to us.
We had no flats nor any other bike breakdowns of any kind. My son rode a Trek 520 touring bike (35x700C) and Jack rode a Trek 830 mt. bike. We pedaled about 600 miles.
My bike touring gear list is available as a link from my web home page. (Basic premise: "Lay out everything you think you need, and don't take 1/2 of it." [Richard Steves, in Europe Through the Back Door.])