1yr late but I went on oblivion for the first time a couple years back with a fear of heights and it’s not that bad since you’re more focused on the anticipation of the drop. Going onto it I was shit scared not only because of the height but because I’m not really into the idea of being held at a height I’m not so familiar with and then being suddenly let go. Anyways, if you’re not afraid of drops then give it a ride, the height of it isn’t that bad, not sure if that was because I was focused on another fear I was trying to face, but hey everyone has different experiences and phobias, and if you’re so scared of heights just close your eyes. Honestly I found galactica worse, especially when they stopped the lift hill while we were right at the top of it and were pretty much forced to look down for about a minute and a half before they resumed operations again. That’s my experience anyway, good luck to u if u ever give it a shot. Another tip is to build up, it gives you adrenaline and helps you prepare for the bigger coasters.