Was lucky enough to book a tour on a day when no one else booked and got a private tour. The tour is a bit out of the city, starts early has a few stops along the way and the train ride takes up majority of it. It's close one, but the train ride was bordering on being a bit too long, by being well over an hour and half. After the train ride its a late lunch and the drive back to Bangkok.
Its a long day with majority of the tour taken up by various stops prior to arriving to Ayutthaya and the river cruise. The stops in my opinion were not too interesting. eg you seen on temple you seen majority of them. Shortly before lunch we arrived at Ayutthaya. Once arrived we had a brief talk from the tour guide and then were let roam to complete our allocated 45 minutes for the stop. While it was wet due to the rain but i dont feel this too away from the tour stop as the ruins could easily be viewed and observed in the allocated time. In my opinion the day was long the ruins a non event (due to little thats left standing) and the best part of this tour was the River cruise back to bangkok city, were you got to absorb the Thailand way of life while cruising on past.