This has been a difficult and at times confusing process and I haven't applied for a UK visitor visa yet.
One of my friends just went to VFS and they told her it wasn't just biometrics and she had to bring all her supporting documents with her, including hotel and flight reservations.
Meanwhile, gov.uk says not to include hotel and flight reservations unless they asked for after sending the application and the other supportive documents. It also says that during the biometrics appointment, the applicant doesn't need to bring the supporting documents.
If anyone has experience with this, I'd love some help: what's the difference between applying for a UK visa through VFS and through gov.uk? Which is better and which is more recommended?