hi carlene, that's really a sweet surprise for your hubby. Hope everything will go smoothly for you!
currently I am staying in hk and I muz say 30sgd per meal per pax is more than enough...
my hubby love shopping in mongkok because there r alot of malls selling electronic stuff... games and gadgets. if ur hubby is into those too, i am sure he will be very happy there. for you, mongkok center will be a great shopping for girls.
Can try the Fa Yuen Street shopping in Prince Edward. It's similar and better than ladies market.
as for sight-seeing, i realise most locals here prefer ocean park to disney. for me they r about the same. Tickets are too expensive to go often too.
And regarding speaking in chinese... actually it's the wrong concept... most hkger dislike ppl from china... try to speak cantonese if not english. but then again, i am sure they can tell from our chinese that we r not from china.
HTH! Enjoy your upcoming trip! x