When my husband and I got married, we searched high and low for the most appropriate wordings for our wedding favors (see when you’re preparing for your wedding, everything is a big deal, even wordings for wedding favors! My gawd!). We ended up writing it ourselves. This is what we have come up with and I hope it will be useful for your own weddings:

We thank you for being with us
at this celebration of love
and the beginning of our life together

– Simon & Christine, July 2001