Catheter ablation, or not?

[HowMyHeartSings]

I was diagnosed with Atrial Tachycardia three months ago. I am currently on 5 mg of Nebivolol each day. I am getting occasional small runs of rapid heart beats every few days largely only in the night and haven't had a full on 'episode' of 200 bpm for a month (I've had about 5 of them) - when the episodes come they last about 30 mins, burping and leaning forward tend to slow them down and end them for me. My EP recommends a catheter ablation. I am still undecided. I do want the chance of being drug free (I'm 53 yers old and I dislike the side effects of sluggishness from betablockers) but I am still - probably irrationally - concerned about the possibility of the procedure making things worse. I also don't relish coming off beta blockers several days before the procedure - what happens if I start having more frequent episodes where I can't take a beta blocker as I am going to have the ablation? I have also been told I can't have the ablation with a general anaesthetic as it decreases the chance of success - I'm worried about coping with just sedation as I am a nervous patient. Also what do they do if you need the loo if it becomes a longer procedure? Lastly (sorry this is so long) is there any better catheter ablation technology about to come into play that would make it worth waiting for? Thanks as ever for any feedback and more rational experience than my over worried imaginings!