In order to prove your case you will require evidence such as rent statements. (if the tenant is in rent arrears), witness statement if the tenant is subletting and so forth.
Hearings are usually less than 10 mins long because in most cases they are undefended, should they become defended they are likely to be adjourned and relisted for a longer time with directions on how the case is to be conducted. Mostly when these hearings become defended it is because the tenant is claiming disrepair.
Once you obtain a possession order the tenant is most likely to only be given 14 days to vacate the property.