Watch out for vortex ring; it's easy to have a high rate of descent at low airspeed if you fly the apparent closure rates you're used to for in-to-wind ops.
Make sure you've got OGE hover capability because there will be a bigger gap between loss of translational lift and any assistance from ground effect.
Slow down fairly early ground-speed wise so you don't get sucked in to racing into a confined area at a million knots.
That's about it off the top of my head.