Is it Necessary to Have a Seperate Reception Card?

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