Cake and champagne reception only

Sounds lovely and relaxed. you may need some additional nibbles just to soak up the alcohol and for those guests who aren't really cake eaters?

Sounds lovely and informal, maybe swap the champagne for prosecco and have canapés too for the non cake fans? Xx

Think you need to have some food served. 2-6pm is quite a long stretch without proper food, especially with kids. Why not have some bowl food served?

I think at all sounds good. People would of had lunch before and probably have dinner after so I don't think you need to have more then you planned unless you wanted to and then maybe have nuts and things like that.

Make sure you tell people though as they will assume there getting a meal.

I like the sound of it being quite an informal but elegant affair, but I think you should make it clear that your guests won't be getting a full meal so that they know to eat before hand. I rarely eat lunch before a wedding because if the ceremony is at 2pm, and we have to drive there, I might need to start getting ready at 12ish. (Ok that's a lie, I would start getting ready a LOT earlier than that!).

You could just put something like: 'Ceremony at XXpm, followed by a reception of champagne and canapes/cake. Carriages at 6pm.'

Echoing what Karen said, I would make it very clear to your guests that you won't be serving a meal. I'd also provide something savoury alongside the cake - posh crisps and nibbles would be fine.

As for me, it sounds very good, like a "warm" party, very friendly, I like it!)