Welcome Kellcat,
Waiting is no fun. The only advice I have is cancers do not progress that fast and with 2TURBs confirming an early find, just go with that.
Non muscle invasive is a good start. I remember some 15+ years while taking BCG, my body ached and creaked (or so it seemed) many times in my back and worried about what if. After 6 months I let it go and figured I would go on with my life and am still here. I suspect (none of us are doctors) that the BCG is causing some of the swelling in his groin as a reaction. It affects many parts of the body.
Easy for me to say but, get an appointment for when you get back. 10-12 days should make no difference and try to enjoy your familt time in paradise!