The main things the course offers are:
- an understanding of the way insulin and carbohydrates interact, and guidelines to help you adjust insulin doses yourself
- the biology of the way diabetes works
- info about what all those numbers/tests mean when you go to annual review, and what you are entitled to
- ongoing support, if you want it, from a dietician and a diabetes specialist nurse in a more intensive way than you'd probably get normally
- the chance to feel normal because you're in a room of other T1s
- the chance to learn from other T1s' experiences
if someone's already happy with the way they are self-managing, and don't feel they'd get anything from spending time with others with Type 1, then DAFNE probably isn't worth it. Having said that, as Elc says, most feedback does seem to be very positive. Personally, I was happy with the way I self managed, but I still learnt a lot of useful stuff about what I was entitled to, and I'm still friends with some of the people I was on the course with; I found it really good to talk to others in the same situation.
NB: some DAFNE centres offer the chance for partners/loved ones to attend the severe hypo session if they want to. If you have the chance, take it - I wish I'd made my partner go to that bit. It's well worth it and it will also help you understand what kinds of things your boyfriend is learning.