Farm your dailies and at least be in WG when the battle ends to get your mark. Lag or no just be there. I end up running with my own 5 man group (shammies) because its just easier to keep track of them on the mini map as well (I really don't look at their screens unless I have too).

Run the dailes on all your level 80 capable toon and get tons of cash. I have two teams at 80 (Both shammies but horde and alliance and I do double Icecrown farming and just transfer the money over to Alliance cause my horde toons already have all Epic flyers etc.