Learn Arabic (Modern Standard): لا، ليس هناك طابور للأفعوانية اليوم. - No, there is no queue for the rollercoaster today.

هناك normally means "there is" or "there are". To make it negative, we put ليس (which means "is not") in front of it. Together, ليس هناك is the standard way to say "there is no" or "there is not" in Arabic.

Would ليس هناك change if we were talking about a feminine word instead of the masculine طابور (queue)?

Yes! Because طابور is masculine, we use the masculine ليس. If the thing that isn't there were feminine, we would use the feminine form ليست. For example, if there were no car, you would say ليست هناك سيارة.

Why does the word for "the rollercoaster" look like it starts with two laams (للـ) in لِلأفعوانية?

The word for "the rollercoaster" is الأفعوانية. When you attach the preposition لـ (for/to) to a word that starts with the definite article الـ (the), the very first letter (the alif / ا) is dropped in writing. So, لـ + الـ physically merges into للـ (for the).

Why does the word for "today" (اليوم) start with the definite article الـ (the)?

In Arabic, the word for "today" is literally translated as "the day". It is made by combining الـ (the) and يوم (day).