I was originally scheduled for a face to face course, but had to drop out as I broke my shoulder and couldn't drive. Finally back on an online course (no face to face offered) in 2021. I think we were a group of 6 plus the course educator. Five of us had Libres or Dexcom (me) and I was the only lowcarber in the group. I found it very helpful in fine-tuning I:C ratios (and estimating dosing for proteins) and correction dosing. I'm now not that strict counting carbs/proteins and dosing exactly, but the course was definitely helpful. The educator had me prescribed a ketone meter which is very useful.
Also I believe completing a DAFNE (or equivalent) course is a requirement to be eligible as an adult to be recommended for a NHS funded pump.