If the 7 didn't already cause structural damage to their place, it's pretty unlikely that another 7.0 would - aka trial by fire.
If they've got a decent place they'll have a basement/crawl space - go make sure there's no cracks in the cinder block foundation - bring gloves to pull the insulation off (if they don't have insulation on their blocks, they really should heh) Also check the main support beams of the house for cracks/splits and warps; main beams typically rest on either metal posts (hopefully not) or wood posts that run generally down the center of the open space in the basement. The majority of the wood on the "ceiling" down there are floor joists, typically every 16" and usually attaching to main support beams and exterior walls - they aren't as much of a concern so long as there are not a bunch of them split/cracked in a row or line.)
That said, the damaging jolts of the 7 were in a generally east/west direction (if they're in Anchorage area) so look at what areas of the house are 'danger zones' - cabinets on walls running north/south for example are more likely to dump their contents so think about some cabinet locks if they have standard hinges (ALL of my soft close hinges/drawer slides had enough resistance to hold everything shut, unfortunately for me, I haven't replaced quite /all/ of mine yet >.<) and/or (I highly suggest AND) move the more dangerous stuff that might fall out to bottom cabinets (pots/pans, blenders, heavy bowls, etc.) In the first 7 I ended up with a 4" toss/shift to the west and a 6" toss/shift to the east. The western toss/shift was much harder, it moved my 40" range, gun safe, tool boxes, the eastern toss only moved "surface" crap over and dumped cabinets/fridge, etc. That said, dresser drawers on both the east and west walls opened and some drawers fell out, bookcases dumped, but none of the dressers on north or south walls opened and most stuff stayed on those bookcases. (Sadly for me, most of my shit happens to be on north/south running walls so I had a crap ton of dumpage.)
If they haven't/hadn't already, put tie down straps on furniture that could fall over. (Fridge especially, bookshelves, china cabinets, etc.) They sell them at Fred Meyers, might find them at walmart too; in a pinch use dog leash webbing, screws w/washers into the studs (typically studs are 12" apart, newer construction can be 14" apart), and some velcro or heavy duty double stick tape (harder to find) on the item's top - it doesn't take as much as you think; these two straps screwed into the frame of the house with some velcro attached to the top of the fridge stopped my 600# 4' wide x 7' tall commercial viking fridge from falling over - my heavy ass fridge doors opened and dumped everything, including a couple shelves and drawers, onto the floor >.< I have no doubt in my mind that had we not tied this sucker to the wall it would literally be in the basement right now. Note: the crack there is just a piece of sheet rock we didn't mud after installing the water line to the fridge, its not damage.)
Have them look at the "pattern" of damage in their house, like where things fell out and kind of keep that in mind when putting everything away.
See also:
Wondering about damage to your home after the earthquake? Here's what to look for.
and if they have damage -
Assembly receives quake assistance briefing from state, feds