Several problems with this. How do you know how long the wait is going to be? If this person makes a request and you are not there when the table is ready, he/she look like an idiot. Preparing a table for 10 is not easy task.
If only a few of the group turn up the restaurant will not like it and the person who made the request looks like an idiot.
Most importantly, why do you want to eat there? LOL
Why don't you just go a wait your turn? 4951