Haven't done the kennel thing, but right now my baby has to stay with my father, due to some serious health issues at our house, and it not being fair to him to be stuck in a 1 bdrm. apartment...
Not to scare you or anything, but he's been having a tough time with it. He's not eating as much, nor as active (not by any fault of my dads....he babies him to death...). Boze does have bad separation anxiety, and vet said this was the main problem right now, so I have to stay away and let him adjust to the new environment.
Can you take them to the kennel prior to leaving them there? I think that might help your comfort level and theirs if they have been to the environment before, instead of just when you leave them there for your wedding. Also, it might be better for them to keep them in one environment the whole time (ie, just the kennel, or just your parents) so there aren't multiple transitions and adjustments involved....
Just a thought...I'm going through it now, so I'll let you know how it all goes...