When you take a photo at a seat near the window with a nice view, you tend to include the outside view into the photo as a background as well as the wine and champagne. As a result, you forget to consider the "color" of the wine and champagne in the glasses.
Unless you can capture the deep red of the wine and the golden color of champagne, even if you find a "cool" composition, the photo will no longer give you a "delicious" impression.
The leading players are the dishes and drinks on the table, and the background comes in second however nice it is. First, look for a position or an angle at which the colors of the drinks in the picture look vibrant while moving the glasses on the table.
You should not forget what the leading player is particularly when you are seated near a window at a good location.

When various kinds of dishes are placed on a table at a restaurant, you sometimes want to photograph "this subject only" or "a picture with depth". If you hold your camera vertically in such a case, excessive information will be included on the right and left, possibly not allowing you to bring out the subject you want to photograph.
In a case such as this, hold your camera vertically, and try a "vertically-oriented shot". This eliminates the excessive information on the right and left and creates a picture with only the desired subject in focus.

<<Basics for vertically-oriented shot>>
The key to good vertically-oriented shooting is to hold your camera at a slightly higher position than required to photograph a desired subject. If you take a picture from a low position, subjects in front of your camera will be zoomed in on, and ones behind your camera will not be photographed.

<<Application of vertically-oriented shot>>
If you want to emphasize the beautiful long stalk of a glass or the full length of a wine bottle impressively, hold your camera at a position lower than the subject. Slightly incline the top of your camera you are holding vertically backward, and take a picture from a low angle in a position looking upward so as to zoom in on the bottom of the stalk. This allows you to shoot the beautiful long stalk of the glass or the entire bottle.

Even if you photograph the same subject, the message of the picture changes dramatically depending on what you focus on.
Passing on an atmosphere or image or explaining the material used;
according to your purpose, try changing the position you focus on.

"Color" is one of the important elements that makes you feel "It looks delicious". When the color of the main dish is not clear, utilize the "color" of the attached vegetables effectively. A picture of dishes that include three colors: red, yellow, and green, look delicious by itself. If there are these three colors on the plate, try taking a photo of the main dish at an angle where all three colors can be in one frame.