The Vacation Plan

The original plan was to go to England without a plan, but I just can't operate without a plan. So here is the plan:
May 9, We fly out of Seattle
May 10, We land in London at 7am pst (15:00 local time)
Take bus/train to Bath
May 11 Walk around Bath, get rental car, drive to Fairford Royal
Airforce Base via Avebury and Huffington White Horse.
May 12 Drive around the Cotswalds
May 13 Visit Warwick Castle and Stratford upon Avon
May 14 Visit Stonehedge and Salisbury Cathedral
May 15 Visit Tintgal Castle and the Eden Project
May 16 Drive around western Cornwall
May 17 Visit St. Michael's Mount and Geever Tin Mine
May 18 Hang out; maybe go horse back riding and/or Mass in Penzance
May 19 Visit Glastonbury and Wells
May 20 Drop off car in Bath and take a train into London. Try for a Thames Dinner Cruise
May 21 Visit Greenwich and Dirty Dicks Pub
May 22 Visit Tower of London
May 23 Visit Kew Gardens, Walk around London
May 24 Mass at Westminster Cathedral. Fly Home.
Arrive in Seattle at 16:45 and Spokane at 21:00