
comrade |

It's a tricky balance to strike. Before initiative, you should be given a reasonable length of time to formulate a plan.
I'm of the opinion that you should be a little rushed in your decisions once initiative has been rolled. You're going to make mistakes, especially before the party has fully gelled, but I think that that is part of the game.
I'm definitely towards the 'fast game is a good game' end of our group though. The two most experienced guys lean towards taking more time in these situations.
The flipside is that GMs need to play NPCs/monsters fairly, and must remember that with multiple creatures, they won't all be following the same playbook, and often won't have any organized plans whatsoever.
We're playing Rise of the Runelords at the moment, and it's plainly killing our GM to play the goblins as stupidly and disorganized as he is, but to be frank it's adding to the experience and we're having some good laughs.