Register at ROM

Hi crimlock,

Depending on the date you want to hold your ROM, I think you can file for notice 3 months before your intended date of marriage.

After filing for notice, the earliest and latest date you may solemnize your marriage is after expiration of 21 days and before expiration of 3 months respectively.

If you want to hold your solemnization at the ROM, you can check out the available dates here at the Registry of Marriages website.