Oh that's SO interesting! I thought it was a HUGE hassle when I toured the States and had to load in everything except the PA! To me, it's so much easier here when you can plug and play and take the MTR.
Who wants to be stuck in traffic with a bunch of gear? hAHAHAHAHA
There are plenty of paying gigs too, your post implied you are an "amateur" musician, so i wrongly concluded you don't expect money for performing.
Might I suggest you sign up (for the short amount of time you are still in HK for) to The Underground's newsletter? It lists out gigs happening over a 2 week period and considering people are slowly awakening from the live music ban, that there's loads of venues and shows to attend?
here's the newsletter that went out last week: