Sounds like you've been given excellent tips already, so just a couple of handy ideas we did for Cam's 1st birthday.

Keep an eye out for soft drink and juices on special over the next few weeks.

For Cam's birthday cake- as we ain't the best cake decorators (I did a trial cake a few weeks before to test my ability and i'm glad i did...cause i suck at cake decorating...lol!)- we (moreso DH, it was just my idea thats all)- did blue baby cupcakes arranged into shape of a 1, then bought a premade set of icing letters which we arranged on some of the cakes to say Happy Birthday Cameron 2009. They we're a big hit, and Cam enjoyed his own little cake.

We did do treat bags, but only at my mum's insistance- so i let her organise them- but all they ended up having in it was 1 chocolate, a balloon, 1 of those party whistle things, a little bottle of bubbles and i think a sticker- so really cheap anyway.

The fruit platter was also a big hit too, particularly the watermelon- no fancy cutting here though- just sliced and whacked on a plate.

Another nibble we had was of course the all important and somewhat messy fairy bread- but hey we've got some good photos of Cam enjoying it...lol! Plus the adults enjoyed eating it too!

I think thats all i have for you for now. If i think of anything else i'll let ya know.

The main thing is to remember not too stress about it all too much and just have fun and enjoy the day with you much loved son and partner.