A dream of a trip turned into a nightmare dealing with Smartours' horrendous customer service. Smartours emailed all US passengers that lab techs would be coming to the boat in Dordrecht to give us COVID rapid tests the day prior to our flights home. Smartours lied and no plans were made. Our Smartours guide was clueless about this and told us to tell airline personnel that we had lost our test results. He was very flippant and we worried about getting home for the entire duration of this nightmare trip. Other than this minor issue, the boat's crew, food, and walking tours were surprisingly better than expected...no thanks to Smartours.