So now I have 3 full accounts in WoW.

[skoreanime]

The normal subscription payment is pending but it should finish soon.

Just wondering how long it will take and how the bonus experience gain works? Will it kick in once I log in with all 3 accounts?

[elsegundo]

it kicked in already.

check your wow account online. it will tell you.

[BigSmitty]

Reading Blizzard's Recruit A Friend FAQ works wonders as well. I doubt anyone here will tell you differently, as everything is spelled out in detail, including level requirements in the party, etc.

If you're serious about multiboxing, then you generally want to know ALL the basics before shelling out the $$, but then again, that's just me.