After getting the Ragnarok you can visit islands that you couldn't with Balamb Garden. For easy level gain you must visit the Island Closest to Heaven and Hell. These islands also have the best Draw Points on them thats why Enc-None will come in handy. The Island Closest to Hell is easy to find, just find the island furthest to the West. Now the Island Closest to Heaven is a bit tricky. If you go North East of Esthar, there are three Islands. The one to the right of the other two is The Island Closest to Heaven. These islands have monsters with extremely high levels. I wouldn't suggest going there unless your party members are atleast level 30. You can also find the rare monser, Malboro there so if your having trouble getting Malboro Tentacles for Doomtrain then you might want to go to one of them. But, the Malboros have Bad Breath which causes all of the abnormal status changes on all of your party members so you might want to give some one in your party Mug and stea!

Now to get lots of AP, go East of Edea's house, where theres a desert. The desert has Cactuar's which give you a whole 20 AP for every one you defeat. The Cactuar's have very little HP but you miss them a lot as well and they also run away during battles. There is also Cactuar Island where all you run into is Cactuar's. There is also Jumbo Cactuar who has a whopping 600,000 HP. I suggest not fighting him for a while. And don't worry, he is available to defeat any time during the game. But he is a rather good GF to have around.