Ds does beavers. As far as I can tell the main idea is to be very active and be extremely loud. 
It's only an hour and a quarter, so no snack generally, although if they're doing lots of sports they might have water available.
The sort of things they do are: Yes they have done a hike-at night, with torches and a bonfire at the end with hot dogs (longer session), they went to B&Q and made flower stands out of wood, football, basketball, first aid, lots of army museum type places, donutting, litter picking, pancake making... and lots of badges too.
Can't you order the bages from UK and use them? I think it's a pity if they don't get them when they've worked for them.
They also have Beaver of the week (gets a soft toy beaver to take home) and Beaver of the month (small trophy).
There are also extra things like family camp (Beavers plus family) and days out-some of them are going to trooping of the colour and that sort of thing.
I think the meeting generally are along the lines of: Basketball/fooball until they're ready to start. Sit down in circle, tell them what they're doing, activity, tidy up, back in circle to finish and give out any badges, Beaver Howl! (which you may want to avoid!)