The first thing when planning trip is checking entry requirements and seeing if you qualify.
You must know which visa category for Abu Dhabi you fall into. There are several visa options for foreigners and those traveling for tourism often choose tourist visa.
There are travellers from some countries that qualify for on arrival visa to Abu Dhabi and others enjoy visa free entry to UAE. If not eligible for either you need apply for prepaid tourist visa.
Visas on arrival are issued to travellers when they arrive in country at the airport. Go to immigration desk upon arrival and passport will be stamped with visa to Abu Dhabi free of charge. The only visa on arrival that is not free is 14 days on arrival visa issued to Indian nationalities with specific visa like for US, UK, Australia, Canada and Japan. There are 3 types of free on arrival visa:
This visa must be applied before you enter UAE. You can apply it through official government website, UAE airlines or authorized travel agents like Arabiers. Visas are applied online all you need is submit the requirements.
The documents you need for Abu Dhabi tourist visa depend on nationality and age of applicant. The mandatory requirements are:
Other requirements may include:
Some nationalities are even required to submit national identity cards.
Abu Dhabi is safe destination with low crime rate. Travellers however need to be informed about security for them to beware of surroundings during travels.

Below are recommendations for improved security:

Before you leave to Abu Dhabi you need to tick a checklist to avoid forgetting important things.
For smooth travels to Abu Dhabi, it is important to have checklist for travel requirements. A checklist helps you navigate formalities with confidence and you focus on enjoying amazing experiences the city has to offer.
The checklist should cover all aspects from visa requirements, to health and safety measures like hacks like packing efficiently. Travel regulations change often so it is crucial you check with official government website for any change.
Yes, most Indian citizens require a visa to enter Abu Dhabi. However, Indians with a valid US visa (Green Card or tourist visa), UK, or EU residency are often eligible for a Visa on Arrival.
Typically, an Abu Dhabi tourist visa takes 2 to 4 working days to process. For urgent travel, "Express" services are available that can provide approval within 4-5 hours.
Absolutely. A UAE tourist visa (whether issued by Abu Dhabi, Dubai, or Sharjah) allows you to travel freely between all seven emirates.