A
RF Boulevard is an excellent choice! If you're seatbelt is similar to that then I don't see a problem. You car seat manual will have the kinds of belts that are NOT allowed to be used to install the seat.
Since you're only going to use the seat occassionaly, you might want to look for the Cosco Senera ($43 and change) or the Safety 1st Uptown($99). Both of these seats allow
RF for a good length of time before being outgrown. The
BLVD is an expensive seat that most people wouldn't spend for a 1x week use.
Make sure you have that airbag turned off when she is in the car....it will decapitate her when
RF.
Susan