Saw it this evening. Thought it was entertaining and visually impressive. Why use one drum to sound battle stations when you can use multiple drums. The enemy was suitably nasty and plenty of action.
My wife liked it very much. She was impressed by the uniforms, the colour and even the different ways of fighting.
I had no problems with it at all. Could not work out Matt Damons accent but no big deal. His sidekick was fun. Strong female leader and the female soldiers had the hardest job (ie. bungy jumping with spears).
No problem recommending it as good action, visuals and humour.