Learn Romanian: Chelnerul este foarte simpatic.

In Romanian, definite articles (words for "the") are attached to the end of nouns rather than being separate words. The base word is chelner (waiter), and adding -ul makes it chelnerul (the waiter).

Does simpatic mean "sympathetic"?

Not exactly! This is a classic "false friend." While it looks like the English word "sympathetic" (understanding someone's feelings), in Romanian simpatic simply means "nice," "likeable," or "friendly."

Can I say e instead of este in this sentence?

Yes, absolutely! e is a shorter, very common conversational version of este (is). In spoken Romanian, you will usually hear Chelnerul e foarte simpatic.

How would this sentence change if the waiter was a woman?

The noun, its attached article, and the adjective would all change to match the feminine gender. A waitress is chelneriță, so "the waitress" is chelnerița. The adjective also changes to match, making the sentence Chelnerița este foarte simpatică.