Hi had an ablation too for just what you had. I got a little scared and called my heart doc about a week after the procedure worried about the same thing...his advise was to give my new heart a little test drive and go to Starbucks and get a latte with a double shot of expresso (the idea freaked me out)...i did not problem...i was shocked. I hadn't been able to drink coffee, iced tea, anything for quite a while before the ablation. Believe it or not he told me to next try bungee jumping if i really wanted to get my heart rate up...of course i didn't but his point was well taken. The other thing i didn't know and kind of surprised me was i was not aware that when we have these problems before the procedure that vibrations in the body set them off. I never knew that...i live just north of San Francisco and have walked across the Golden Gate Bridge alot and my heart always felt "funny" doing so. He told me that he rides his bike across the bridge as part of his workout on the weekends and as the cars pass by it causes the bridge to vibrate an told me his heart reacts to it if he is stopped with his hands on the railing...was that ever an education.....enjoy the effects of the ablation and welcome back to your life...just listen to your docs advise.....but you should be good to go Houston!!!!!!!
Follow you doctors requirements, but if the ablation works I'd say you have little or no more to worry about regarding caffeine and alcohol than everyone else. We all have to apply some level of moderation.
I'm an old guy with Atrial Fibrillation, and went out tonight for dinner with my wife. I had two glasses of white wine over a two hour dinner period. This is not an every night thing, but I do it from time-to-time and don't have any problem... yes and I ate most of a chocolate desert (my wife had a couple of bytes) and a cup of decaf-coffee. I drink a little decaf coffee, cola, and a very little regular tea on most days. Binge drinking isn't not recommended regardless of you heart condition... so nothing lost on that advice for us heart patients.
Good luck, and enjoy life... it is too short to worry about things that are not going to hurt you