... so as not to freeze?
The instructions say, "You're welcome to bring your own dressing gown or tracksuit, as long as they contain no metal."
I don't have a suitable tracksuit, and the above makes me think they'll want me to strip to a hospital gown, and lie for half an hour in what seems to be a caravan in the car park.
Could any kind person tell me what to expect and a bit more about clothing? Frozen nipples may not be conducive to Not Fidgeting...