We require up to 72 hours for all transfer requests. The time will depend on how large is your transfer. (If you need the content transferred faster, or need more control of the transfer process, you may transfer the files yourself instead of having us do it.)
The free transfer service does not include any programming, code or configuration changes to your site that would need to be made in the advanced techniques described above (for example, changing your database settings on the old site so both point to the new database, or name server changes).
Basically, the more control you want over the transfer process, the more involvement would be required of you or your web designer in the process.