Sat morning - Bkk - Damnoen Saduak floating market.. ( ~ 90 kms)
Sat afternoon - Floating market - Erawan national park ( ~ 170 kms)
Night stay at Erawan..
Sun morning post breakfast ( Erawan for 2 hrs)
Sun late morning - Erawan - Ayutthaya ( ~ 150 kms)
Sun night - back to bangkok .
This seems to have more driving ..
What to be done with Damoen Saduak on Sat ?

Seek advise