Update June 15, 2021 from home office:

Eric and Mary are located approximately 40 miles, up the river, from Livingston, Guatemala.  Being in Livingston was in order to gain entry thru Customs, and now they're in the Rio Dulce area.  If interested, you can find it here: 

https://www.google.com/maps/place/Rio+Dulce/@15.7263929,-89.0237529,11z/data=!3m1!4b1!4m5!3m4!1s0x8f60d54d3ef4e7d1:0x26adcef7d96f4941!8m2!3d15.7213765!4d-88.8970468