Hi Bob
Sorry for the delay in getting back to you. I've been trying to get an answer for you.
There is a programme of optional excursions available in both destinations and our agent in each resort will let you know what is available when you get there, as the list is subject to change. If I can find out any more detail I will let you know.
I would recommend Singapore as a stopover destination, as there was much more to see than I imagined. Hong Kong is also fascinating, but perhaps you have already been there.
Kind regards
Olly, your editor