The distances/terrain/lack of single track are definitely in line with the 'moderate' rating, but beware the effects of the sun. It was really intense at times, especially on some of the climbs, which definitely made them feel more 'challenging' than they should have been. (The bus was always right behind just in case anyone needed it though.)
I definitely recommend the option to sleep outside at the house-stay, but it's worth having some layers to sleep in (and maybe a wooly hat) as it gets a bit chilly.
Prepare yourselves for lots of delicious fresh food, and very friendly, welcoming locals (who often stopped what they were doing to wave and shout hello as we passed).
Make sure you remember sun cream and insect repellant (as quite a few of us got some bites).
Despite what the trip notes say, it's apparently not a problem to wear lycra shorts.
Bring/buy a few extra snacks just in case you need them for the climbs (some chocolate/cakes were provided most days, but not all, and not always enough to last until lunch). Also there are no drinks provided at lunch (other than water to top up bottles with) so you might want to bring something with you, or leave it handy in the bus.