Maybe change the message with 'summer 09' and add "gamemode" "#" to the worldspawn.
Accel and decel for the func_plats would be nice, too.
And here a few pics, but all things are very easy and fast to fix.
I would add some more lights in this area.
Move the textures a little bit (S=0, T=0).
Just the top of the box is misaligned here.
Move the texture here, too. The other side is ok.
I would add some more lights here, too.
Move the texture a little bit, that it looks like the left one.
Maybe a wrong texture? Looks a little bit weird. Or is it meant like it is?
Otherwise the map is very nice already, great job