K.V.
My boys & I have RV'd w/my folks since my oldest was 6 months old & they had a 5th wheel. When our youungest was just 2 months old, my parents bought a 38 foot motorcoach & our 2 month old took his 1st trip to Yosemite. So, yes, carseats can & MUST be installed in RV's. In my parents, their couch has seatbelts for 3 people , they have a club chair that has a seatbelt as well as the front seat w/seatbelt. Technically, you're not supposed to ride at the table cuz it has no seatbelts but my older son has. We also used bring along my older son's booster seat so he could ride 'shotgun' w/Poppa & help w/the map. He's snow past the need of the booster so he rides there buckled in like an adult. I was able to install the infantseat w/o much issue & have installed the Britax now for 2 yrs. I found that I need to take off the seat cushion in order to get the Britax in tight cuz the cushion is too mooshy. The couch is actually a sleeper so the carseat it buckeld to the backside of the frame of the couch. Just an FYI, all RV's are equipped, by law, w/seatbelts. We ahve done these trips w/folks now for 7 yrs & they are the high light of hte summer for my boys & I! I love RVing cuz we have running water, air conditioning, & the ability to be clean while camping. It's a GREAT way to see America! Have fun & goodl luck!