The pronoun 'they' is a plural pronoun taking the place of the singular noun 'restaurant'.
The sentence should be reworded: In this restaurant, reservations are required weeks in advance.
Although technically incorrect, it is common to replace a singular noun which also represents a number of people with a plural pronoun; for example, "The team got their new uniforms." "The staff uses the copier nearest to them."
sentence: The bride-to-be had serious reservations before the wedding. Also means to reserve a table at a restaurant, " We have a reservation for 8:15pm at the Fat Duck restaurant." and an area of land where native Americans would live.
There is no antecedent error in the example sentence. The only alternative would be to use the plural, pronoun 'they' (instead of 'she or he') for the singular, indefinite pronoun 'anybody', which is actually acceptable since English has no gender neutral, singular pronoun for a person of unknown gender. Example: "If anybody wants to go to that new restaurant, they have to make reservations a month in advance."
Your reservations have been affirmed.
Example sentence - We made our flight reservations allowing ample time for confirmation prior to making the hotel reservations.
"Working in a restaurant" is not a sentence. There is no subject or verb. It is a fragment.
Example sentence - We were eager to try the new restaurant in town.
The verb in that sentence is describes.
Example sentence - We made flight and hotel reservations in preparation for our holiday.
Example sentence - We made our reservations to ride the schooner during our vacation.
I WOULD LIKE TO go to a restaurant
I will make an exception in this circumstance, with certain reservations.
The occupants of the restaurant's waiting area erupted in laughter when the seemingly unsuspecting hostess announced, "Slumber, party of four...".Without advance reservations, a party of four will usually be seated prior to a party of six.