Hi All -- my wife and I will be sailing with AmaWaterways on the AmaDara on one of the their Mekong River cruises, Nov-Dec 2023.  Our first river cruise.  We're also doing the pre-cruise option in HCMC/Saigon and the post-cruise tour to Angkor Wat from Siem Reap.   I read a thread on this forum a few weeks ago where a poster commented about tipping guides and drivers each day, but I can't find it now (yes, I should have bookmarked).  I have no problem with the tipping, I just want an i