Thank you for your prompt reply, Mark.
Would you care to expand on your trip to Kanchanaburi? We are very interested in seeing the Kwai River/bridge/railway/cemetery, etc. please advise thumbs up/down etc--we have Sat to orient in BKK and Sun to tour K prov (if everything is open?) We will be well rested since we overnight in NRT. We just need to cram in as much as possibel without killing ourselves!Thanks again for your help.