I am in need of a molar extraction an have vacation planned next day. should i change apt or will i feel ok?

You want a guarantee: Can't tell over the internet which tooth it is, and how difficult the extraction might be. Extracting it may cause a problem, and leaving it may also cause a problem. More info is needed, but the dentist who will be extracting the tooth is better prepared to answer your question since they know your mouth.

Tough question: It depends on the tooth, why it needs to be removed, difficulty of removal, potential for post operative problems, and the skill of your dentist. You should ask your dentist for advise concerning this.