Well yes, they'll encounter 25-plus knots, but more typically in the Drake channel its around 20, at least when I went many years ago, in March. But first, they should get experience in say 10-15 knots if possible, preferably before heading down there where 10 knots is harder to find. I've only been there once, but it was with 3 42-foot boats, 19 prep school kids from Massachusetts on spring break, and five "adults" as skippers and chaperones, with my wife and me at 27 being the "elders". Challenging, but ultimately a lot of fun.
My goal is to prepare them for the strongest winds they are likely to encounter. When I was in the BVI in 2014 we had a squall with 30 knots for about half an hour. I hear that is neither expected or unusual which seems like the right balance to me.
I go back and forth on suggesting their ultimate "heavy" weather strategy be start the engine, drop the sails and head for shelter.
Sailing on main alone in a charter boat (which tends to be sorta undercanvassed) can be kludgy, especially above a reach. More pertinent may be learning how to reef main and partially furl/reef jib, move jib cars, ease travelers out so as to "depower" the boat, but keep the sail area balanced fore and aft.
I agree. I just think it's good to have in your bag of tricks. And, if you've needed to do this before, the 30knot squall won't be as frightening.
Remind them it's easier to reef at anchor than bouncing around underway, and easier to unreef than reef, in lumpy windy weather--safer, too.
Oh yes you do need to anchor, a lot, at least we did way back in the '70s
In March 2014 we anchored once: the day we arrived at JVD really late. And we could have gone over one harbor and moored but we wanted to try anchoring.
You might cover radiotelephone procedure. Say the other boat's name first, then "this is", and get off 16 onto another channel, etc.
That is a good idea. There are so many things to cover!
Radio procedure strikes me as something that would be well suited as a handout. They're not going to remember it all but if they print out out or download the handout they're all set.