With proper positioning Prince takes NO movement after the pull.... just a matter of healing and DPS then.

Nightbane doesn't require AE for the skellies, however with sufficient AE/proper healing you can down them easily that way. We shift between assist train and ae tactics based on group build.

Garrotte is easy to heal through as long as you dont get too many stacked... and thats why warlocks have soulstones. If a DPS gets garrotte you soul stone them and have them burn their mana out then die... rez and wand while they regen. Warlocks can keep themselves alive easily drain tanking garrotte, so depending on class mix it should be easy (as long as you have 2 priests).