At DL we UIO as a training example for our RNP approach procedures - kills two birds with one stone; RNP procedures training, and UIO familiarization. I'm pretty sure that captains also require a checkout trip with a LCA or AQFO.
For thouse that don't know - AQFO's at DL are FO's that recieve special training and are qualified to check captains out on SAQ airports.
I got Quito qual'd by flying the ILS circle to land the first time I went to Quito. Others in my unit did the same except they flew with someone who had been there before. By the way getting out is tougher than getting in.
I just read a new pilot bulletin regarding quito and F/O checkouts-
I have a trip there in December and was expecting to have to do one day of simulator- looks like as of now, all I have to do is the CBT module to be qualified since I did the RNP training on my recurrent PC in October.