Should I activate my Unionbank Rewards CC even I already have Unionbank U Platinum CC?

Hi please help, hindi ko po alam kung dapat ko bang i-activate yung kadarating lang na Unionbank Rewards CC. May Unionbank U platinum NAFFL na po akong CC na nauna eh. Etong Rewards po may AF kaya naghihinayang din po ako sa AF pero may mae-earn na reward points unlike UB U platinum walang reward points po. Thank you.