Can I join my wife after completing the 15-day ASQ quarantine in Thailand?

Once the online TM30 system comes back up (it's been down since last Friday) your wife can apply to use it at this website;

Tell her it's NOT just for hotels and anyone can register to use it. She needs to upload her thai i/d and the front page of the blue house book. She'll get a log in and a temp password, go into the system change the password and then can use it to register you when you show up there

You can do the TM 30 online, your wife can set it up now.

*ASQ

My friend has just come back from the UK and yes you can. You need to let them know the address your staying at.

Yes. After quarantine you can