I came across this site today while trying to get information on motion sickness-- so I suppose, first of all, a hello is in order. I didn't realize a community like this existed. I already feel less alone.
Now, to the crisis at hand.
A couple of friends of mine have reserved a pontoon boat to take 20 to 30 minutes out to a small island here (I live in Florida). I already RSVP'd, thinking I could handle the fear of getting motion sickness, but now that it's tomorrow, I'm beginning to panic. I used to go on speed boats all the time when I was little, but when I was nine, I took a three hour mini-cruise and felt awful. I haven't been on a boat since, and I'm now 22. I've already resolved to not back out out of fear. I know I need to tackle this issue, or I'll never get on a boat again. I'm sick of missing out on good experiences due to my emetophobia.
Does anyone have any information on this? Is there a risk of getting sick if I'm on a pontoon boat for a half an hour?
Also, I've never taken dramamine before, as I typically just avoid these kinds of situations altogether. Has anyone had any luck with it?

I just want to be able to get on a boat and have some drinks with my friends without having a panic attack.