w can I integrate ticket printing for different printers in a restaurant?
Probably not. After a brief search of the internet most restaurant printers are not online and usually have to connect to some device via USB/serial.
Then you need to get those printers to be online like using Printercow via a Raspberry-Pi. Or you would need to buy into a system like Star Micronics and intergrate with their cloud/online services.
Once your printer is available to the internet somehow and there is a REST API, then the HTTP node could talk to it.
it is possible if you are using self-hosted n8n. you can use packages in code node