We went with our son when he was 8 months old. We had no problem going there, (gate checked the stroller - you can take it right to the door of the plane, he sat on my lap, he had a bit of gravol as a precaution since DH is VERY motion sick, DS slept most of the way).
Definitely bring your own snacks and drinks. Bottles will be no problem, I would bring them in the carryon.
The big issue we had was coming BACK. At Orlando airport, we got in line for security. DH had the carry-on, I had DS and the stroller, we had put the 'bucket' on top of the stroller, but it didn't really fit. They separated us in to separate lines before we knew what was happening, and would not allow DH and I to even go NEAR each other even though we were in side-by-side lines. Once I realized we were in separate lines, I asked for my son's bottle, they would not even let him pass me his bottle! The security guys freaked out and said "NO CONTACT!"
My line went really really slow since I was in the check-every-nook-and-cranny-of-your-being line, while DH was in the "normal" line. I was in line, no kidding, for an hour and a half, while DH went through the other line and eventually waited at the end of the security area with the carry on that had my son's bottle. I asked if my husband could take our son in his line/check, they yelled at us NO - NO CONTACT!! My son was crying and I was trying to manage my crying son, the carseat and the stroller by myself in a crowded hot line for well over an hour, and they were so incredibly rude. I kept asking my husband to give me my son's bottle, they would not let him!!! They had these huge security guys blocking him and yelling at us. They finally told him to move away where I couldn't see him. It was awful. I kept asking for a Manager, they refused to get me anyone, they told me just to be quiet and wait. I could not get out of the line since that line is right against the wall and there are several other "normal" lines in your way to get out (plus I had the stroller). I told them I wanted out of line and that I would join the line again, they said NO. I felt very trapped.
I finally got to the checking area and had to take apart the entire stroller and carseat, put it up on the conveyor belt and hold my screaming son at the same time. I asked if someone could help me, they said they were not allowed. My son and I got frisked - I felt totally uncomfortable with them frisking my baby up his clothes but that is another story. Finally, I got to the end where my DH was, but they were still going through people's stuff and hadn't got to my stroller yet - it was still on the conveyer belt. I finally started to cry - I had lost it, it was extremely hot and I was sweating with a crying sweating baby, I felt completely "bullied" for lack of a better word and my 8 month old had been crying for 2 hours, he was hot, wet and hungry.
Finally, one of the screeners who was a woman, saw me and my baby crying and came over and said "what are you waiting on"? I pointed to my stroller, she went right over, did the check on it, brought it to me and took me to my husband. She apologized (must have been a mom). It was horrible.
So my lesson is:make sure that whoever has the baby has the baby bag with the bottle in case you get separated, but try not to. Literally, my DH was just holding the bag and they whisked us in to separate lines and would not let me even get a bottle from him. BEWARE!!
Kathy.