Glad to hear he is doing ok Jim.
This was a terrifying situation for all your family no doubt, but you know what, the fact his dad keeps rays will have made this experience easier to bare, he would definitely have been more at ease with you telling him he will be ok and the fact he is used to seeing these creatures on a daily basis....the degree of fear has a baring on the outcome with such cases.
Sounds like a great holiday, hope this unfortunate experience didn't tarnish it completely.
Fantastic news he is ok.
All the best to you all.