Love these feeders.  I bought a second one because they work so well and I got a second cat.  The 6 spaces are large enough that if i fill them full there will still be some left for the next time it rotates through, meaning it will last longer than just one rotation.  I don't think wet food would work.  Maybe for 1.5 days.  The little ice packs just wouldn't be large enough or insulated enough to do the job much longer.  But I highly recommend these for those who travel a lot on weekends or for short trips.