My wife and I combined ours about 8 years ago, before all these bonuses. Back then they did'nt allow you to get points for more than one room (so we booked 2 rooms under separate names) One thing which is no longer available for the Mutual fund as Gold or Silver members we got two sets of the 20k point reward discount coupons each year.
Still have about 12 left they are great when redeeming awards.
Mike