I need invite help please!

I am trying to diy my invites and I have a question about RSVP wording
so far I have the wording for my invite as follows:

Together with their parents
Lauren
&
Peter
request the honor of your presence
at their marriage
on Saturday, the twenty eight of April
two thousand twelve
at eleven fifteen in the morning
Crestwood Manor
Northport NY
Reception following ceremony

Do I need to include an RSVP line on the invite or just print it on the response card?

TIA

---

Posted by MrsTarricone2B

Just put it on the response card

---

This!

def response card...

Also, idk if you were just writing fast, but make sure it says the twenty eighth of April (u have the twenty eight)...and is it 'at their marriage' or 'of their marriage?'
Just making sure!!!