Don't sweat it Duderino , Colombia is WGS-84...If coming from MIA expect either TEVIS 1 ARR. or ALEGRE 3 ARR., both begin at ZIP VOR and lead you to the ILS for both 13R & 13L...expect to be cleared for whatever approach about 50 nm out on the arrival by BOG app., controllers at SKBO speak good english but always verify descent clearences If uncertain.
Terrain won't be much of an issue on landing unless you have to circle to rwys 31L & 31R at night...(don't recommend it but it is very do-able If you are on the ball !!)
The only catch are the taxi lights at night !!!(..you can't see them)....be very carefull as tower controllers don't take mistakes very lightly.
There are some really good hotels within' 10 min drive from the airport...DO NOT TAKE A CAB AT NIGHT, have someone arrange all that for you with the hotel. If you guys are staying I highly suggest going to "parque de la 93"....(bars & restaurants....& women !!!) and "zona Rosa" (clubs & bars ...& MORE WOMEN)
If you are interested in buying stuff the Colombian clothes are considered some of the best in the world and the cheapest...for that go to UNICENTRO....by the way, 1 US Dollar = 2,300.00 pesos, try not to take anything bigger than a 20.00, currency exchange houses dont like it.
Make sure you review the dep's., If going back to MIA expect (99.9%) Guaymaral 5 dep., 6.0 % climb out of all rwys If I'm not mistaken and also make sure your ADF's are working unless you want to rely on your FMS 100% ( I wouldn't !!)
Let me know If you need more info.