I bought our Airstream because it was part of some of my best childhood memories; traveling with my family.
So, my wife and I wanted to do the same with our family.
Even with seven of us, we've never wanted for space in our 30' S/O (it's camping, after all).
Toddlers can be a challenge, in the 'stream. Lots of stuff to get into... CO detector buttons to push, and LP knobs to turn.
Pack'n'play is your friend. Make sure it's the kind with the top cover; that way you can leave it outside overnight, without worrying about him/her crawling off somewhere... keeps critters out, too. A real godsend when they're colicky, and you need to get some sleep.
Good idea for a blog, hmm..