yes you do get a reserved slot... the only reason sometimes it says you can't join right away cause the connection slot for the servers are full, even though you have a reserved slot, until that connection spot free's up, you just simply can't connect. as soon as you can, if it's full, it will then boot someone to make room for you. over the past like 9 months ive been PMed countless times by ppl calling me an ass for logging on cause they were booted off the server to make room for myself.
plz read the TOS and know it well if you buy admin.