It is not necessary if your wedding and reception will be held in the same location. The information can be added to the bottom of your invitation.
Example:
Please join us for our reception immediately following the ceremony
Even if your reception is being held at a different location, you can still add the information to the bottom of the invitation.
Example:
Please join us for dinner and dancing at seven o'clock in the evening
Lakeside Winery
458 Lake Drive
Springfield, Ohio
