I know you can use ADB to get the market working but I'm not sure how well. I haven't seen anything about the gapps. Remember, it's still based off of the preview SDK.
The HC source should drop soon and then you'll start seeing this issues being worked on.
Honeycomb is awesome but even deeper-blue said "This is not meant as a primetime ready rom. This is a preview after all." on his XDA thread.
I know better than to suggest folks 'be patient" because that doesn't seem to be a trait that many in the Android community have, myself included.
That's a good thing though, makes for a lot of lively conversation and a fun community.
BTW if you are having ADB issues, this thread worked perfectly for me.
[DRIVER PACK] Easy USB ADB Installer for Windows (32/64 bit) - xda-developers