Dear BTBs,

pardon me for this newbie question...

If I sign for a wedding package now (dec 2012), which includes MTM gown/suits/ROM dress and external photographers,

But my ROM is in March 2013
Planned pre wedding shoot in Aug 2013
Wedding in Dec 2013

How does it usually work for the gown rental?
When do they usually measure the gown and does that mean you get to keep it till after the wedding?
Or you can only collect it before prewed shoot & return after, then collect again before wedding?