Actually I did do both, thanks to Covid! This wasn't the actual DAFNE but a local version thereof, designed to run over 4 weekly sessions. We managed 2 before lockdown struck. It was resurrected as a remote course (via Microsoft Teams) a year later.
I infinitely preferred the in person sessions - I felt I was getting to know everyone better and there no distractions caused by the technology! I found it easier to ask questions and contribute to discussion, too.
However, if remote turns out to be your only option, do go for it - you will still get a lot out of it.