We have 3. We planned to have 2. My DH even went in to have a vacetomy but due to insurance restrictions he had to wait (the deal was yo uhad to be 30, have 3 kids or be on a wait list for a year.) He was less then a year away from 30 so he scheduled it for the week after his b-day. Well, by the time that came SURPRISE! I was expecting #3. (Funny thing is everyone asked is he still going to go though with the V, we were like...UMMMM, YEAH!!!!)
Anyway, I am glad the decision was "put of my hands" if you will. I can't imagine my life without her anddespite the arguing, they adore each other, especially my younger 2 are best friends, I can't imagine who DD11 would have been without her sister.
Our trips haven't changed because of her. My grandparents always have gone on our trips with us so we just put one kid on their room. We stay at the values and we all 5 get ready and keep our stuff in our room, just one DD sleeps in her grandparents room to not break the rules (thought if it wasn't a rule we'd be fine in one room, we do it at all other hotels.)
Personally, I know had I not had my surprise baby I would have had that longing feeling when I was around babies of wanting another, even though I always said I only wanted 2. Financially it is harder with 3 then it was with 2, but now when I hold a baby or babysit a little sweetie I am fine to give them back, no longing feeling like I used to have. I think if yo uhave that feeling maybe another is in the future, if you don't then nothing wrong with wstopping at 2, or 1 if that is what yo uwant.
For me, I am an only and my DH's brother passed away before he had kids, he has a half sisiter but we talk to her maybe once every few years and she has no kids, so family wise, my kids don't have much. No aunts, uncles, cousins, etc so I didn't want to leave them with no family at all when we are gone, so I am happy they have each other.
So I think you can make Disney happen with larger families, sure it isn't as easy but if you have been longing for another for 3 years, I say go for it, you won't regret it once you have that little person.