Having just gotten back from passing through SCL a few times, I can say that the information above still holds true. For the IPC flight I was on it was a purely domestic flight (didn't continue on to Tahiti) so there was no joy of using the arrivals lounge (though I doubt I was entitled anyway). But the Pacific Club Salon VIP on the domestic side was fine - and free entry still with a Diners Club card. Service was very friendly, bringing out drinks and biscuits - it's small, but sufficient to get freshened up, relax, check the internet and watch a big screen TV .

When transiting International to International, there's no problem at all using the LanChile Lounge - and it's quite a nice one too, two thumbs up from me. A nice selection of snacks and beverages, plenty of areas to rest, a swag of internet terminals and decent facilities for freshening up in as well. So hopefully it can be used successfully on arrival for you - but it certainly would take some effort to do, both to get into the lounge, and then to get back out through immigration again - not a straight forward process by any stretch of the imagination.