I will sail with my mother (90) for 2 weeks on board Oceania Marina. Since it is a port intensive cruise with only 1 sea day, I assume that the Grand Dining Room will be closed for lunch all the time (except once). My mother having some mobility issue, what are the options if we do not want to have lunch at the Terrace Cafe? Is there a possibility to have a lunch seated at a table without having to walk to a buffet? Thanks.