Of course!
I am currently wandering around the dinosaur forest just massacring everything I see so that all my characters will be at level 99 before I enter Kefka's tower. I'm really annoyed with Umaro and Gogo because you can't give them espers so that they can improve their stats quicker. So I just give them the Exp. Egg each time and then go kill things! I knew that you were supposed to steal the Economiser (a brilliant relic!) from the Bracosaur but I managed to find one when I killed it. Gem Box and Economiser are even better than Cyan with Genji Glove and Offering! Eight attacks in a row is even better than his swordtechs so I never use them any more. I eventually worked out that you can learn Ultima by equipping the Paladin shield to characters so they are all working their way through one by one. Sabin, Cyan and Locke have only 2 spells left to learn - Meteor and Merton!

Unfortunately I didn't manage to save Shadow off the floating continent and couldn't be bothered to go through from the last save again so I just jumped when the clock got to 1 second. A bit annoying, but never mind.
And DaEezT - why is the floating casino so good? I'm sure you can't play the tables.

And Setzer is rubbish! He may be cool in the nonsense plot bit where they get Gau ready to see his dad and Setzer suggest dressing him in cool clothes like his, but apart from that he's not a very good character. I prefer to have control of what my characters are about to do and not to just them do what they want like Gau does with rages and Mog does with dances. Setzer's reels are easy to get the rubbish ones but so hard to get anything cool it's not worth the effort. I do, however, like Umaro because his attacks - throwing people at the enemies and flying at them with his chest - are pretty funny and effective too!
Would anyone like to recommend which groups I take into Kefka's tower? It says 3 groups and I've got Terra, Cyan, Locke, Sabin, Edgar, Celes, Umaro, Gau, Mog, Setzer, Gogo, Relm and Strago to choose 3 groups from, bearing in mind that two groups ahev to fight dragons. What do you think would be best?