Don't know the requirements in regards to the DR but I'd get documentation of what your carrying, transporting the remains of someone internationally is not normal fare.
From Europe to the States I needed everything stamped by a US consulate, death certificate, cremation date & place, airline tickets, flight #'s, layover times, the works...
Airport security and Customs wanted to know what was in the bag, the papers were very helpful, everybody gave their condolences and I was left alone & on my way.
Scattering them will not be a problem.
I bring ashes traveling with me all the time, you really don’t need documentation, just put it in the security bin on it’s own like out of your bag. Been out in the us and Canada with them 6 times this year alone. The first time I brought the cremation certificate but not one person has looked at it. If it is a huge strange box like they do here then they may want to see the certificate but I doubt it they just do lots of testing like swabs and x rays if they can’t open the box they really didn’t even care about the paperwork.
If you want it to be easier put the ashes in a plastic container not metal but really it’s not a big deal.
they made me dump 3 little boxes of cream cheese ---POP to EWR recently
I have never tried !!!
I have buried my family - where they asked
Due to some recent circumstances, we had to inquire about cremation services in Santiago, and met with Blandino.we just had a similar topic...planning (pre-planning) cremation
it's a serious topic .... now or 9 yrs ago.........IMO