I know some have said LANs service can be marginal... but all four flights on LAN were great. Food is fine.. wine is fantastic, seat and AVOD great as well.
Another benefit of LAN was that I could confirm 2 Business Class seats with little-to-no schedule playing.. just pick dates where JFK-SCL and vice versa operates nonstop.
As RTW4 says, nonstop seats could well open up.. but it's a bit of a gamble, and you'll get hit with the expedite fees if you're not an EXP.