Oh dear - I do hope that I didn't open a can of worms for you .. it's bad enough as it is. I'm sorry, if so.
I'm thinking that maybe just tone down the happy, happy and yes, defo listen to the music! Maybe acting 'normal' and then react as best you can (in DB'er style) if anything is said, will appear a bit more genuine than trying to appear totally happy about what is going on??
Gee, S has a long journey ahead - my calculations say that he should get home around 6-7am ... he's going to be totally whacked out, which will put you in to 'mum on overdrive' mode and I doubt if H will be able to rattle you at that point!
