Drink in Chinese / Japanese...

飲 is how to formally write “drink” (the verb for taking a drink or drinking) in Chinese and Japanese.

This is different than the noun for a drink. There are other ways to say/write drink, but they are more for oral/spoken language. This more formal version is appropriate if you want to write the word “drink.”

This is kind of an odd selection for a wall scroll but no bad meaning.

In Korean Hanja, this character is generally written in the variant shown to the right.

This can be pronounced in Japanese but this is seldom seen as a lone Kanji, and thus is not appropriate if your audience is Japanese. They will, at least, use a second Hiragana character in Japanese, as shown to the right. This is "nomi."

The common oral character looks like the one shown to the right. But this is not appropriate for a wall scroll.

In some cases (often in ancient Chinese) the character shown to the right is used to mean drink. But this word refers to anything you consume in your mouth. This character is most often used to mean "eat" in modern Chinese.

乾杯 is the common way to say “cheers” or give a toast in Chinese, Japanese and old Korean (written the same in all three languages, though pronounced differently).

乾杯 is an appropriate wall scroll for a bar, pub, or another drinking area.

The first character literally means “dry” or “parched.”
The second character means “cup” or “glass.”

Together the meaning is to drink up (empty your glass).

干杯 is an alternate form of the word in Chinese that means “drink up” or “cheers.”

The first character is still pronounced the same, but the form is quite different. This version is used in mainland China but is not really used in Korea or Japan.

喫喝玩樂及時行樂 is just about the closest proverb to match the western idea of “Eat, drink, and be merry.”

This is a Chinese proverb that more literally means “Eat, drink, play, be merry, enjoy everything as long as you can.”

It's basically a suggestion that you try to enjoy everything in life, as long as you live, or as long as you are able.

吃喝玩樂 is the short version of, “Eat, drink, and be merry.”

This is a Chinese proverb that suggests abandoning oneself to a life of pleasure.

食べ飲み楽しめ明日は皆死ぬ means “eat drink and be merry, for tomorrow we die,” in Japanese.

Note: Because this selection contains some special Japanese Hiragana characters, it should be written by a Japanese calligrapher.

This proverb suggests that one should always be grateful to those who helped one succeed.

And remember your ancestors and those that came before you whose sacrifices made your present life better.

Some Chinese will separate the intended meaning from this proverb and translate this as “Don't forget the people who once helped you.” In Modern China, this idiom is virtually never used to refer to an actual well.

Note: This can be pronounced in Korean but it's not a commonly used phrase.