Can I split the Latitudes Rewards dinner-for-two vouchers if I am a solo traveller (two meals for one person)?

No, this benefit is delivered as two dinner vouchers for two people per stateroom. Solo travellers dining alone will receive one meal only per dinner voucher. You cannot split the voucher into two separate vouchers and redeem the dinners on two separate evenings. The benefit applies only if two guests are dining during the same visit.