[villagetinker]

We have a Yamaha with the rear facing fold down seat. The additional seat added about 2 to 3 inches to the cart. We had to get a heavy duty suspension due to the additional seat. Since 2017, we have probably used the rear seats a dozen times but used the cart hundreds of times for golf. With the seat up, it holds 2 sets of golf clubs.
My point think about how often you really expect to use the second set of seats, we have had guests that actually wanted the experience of driving the cart themselves, so renting a second cart would be a better alternative.