Thinking of buying game/few questions

[Stormborn19]

Hi, I'm a casual gamer and am thinking of buying planetside, but before I do, just thought I should ask these questions.
Any help would be appreciated, thanks.

Is Planetside one of those games where you have to run around for 45 minutes to find some enemies? (I found this was the case in DAoC, not all the time but some) or is it non-stop action?

How many players usually on?
Are the battlezones too big? players too spread out action hard to find etc?

That's all I can think of for now. Hopefully I see some of ya out on the battlefield.

Thanks for your help.