Unlikely. You weigh a kilogram more after the reception, in a month you'll be 30kg overweight so you have to take that into account (unless you set your survey period to end mid-reception when you're at your funniest after a few beers, so your d(sense-of-humour)/d(weight) remains above 1. ;)

Do you have the pre-marriage pipeline filled? If not, you might want to include that in your projections.