CGK to Bandung via Cititrans

Hi! My plane to Jakarta lands around midnight. I was initially planning to take the Whoosh but it does not open until past 6 AM and I find it a hassle. Now, I read that you can take cititrans. Is cititrans available 24/7? Note that they have scheduled trips online (which I cannot book because I need an indonesian number) but I don’t want to risk it. Cititrans is also the accessible and cheaper option, as I don’t have to take the Gojek to Halim or book a room for day-use.

Can i simply show up in the Cititrans and expect a shuttle around midnight? Do I need to book beforehand? Same question about Whoosh, is it packed during weekends? Can I get a ticket on the booth itself?

Thanks! Answers will be of huge help to this anxious traveller.