You can reach Andaman & Nicobar Islands with both Aeroplan and Ship but due to uncertainty of Ships' schedule and availability it is better to opt for Flight travel.
No, Andaman & Nicobar Islands are a part of India and passport is not needed here.
The answer is yes, very much.
Answer is no, tribal people live in a remote and reserve area and and everyone is not permitted to communicate with them.
Currently there is no cruise operated for Andaman but ship sails from Kolkata Chennai and Vizag. But due its unreliable sailing schedules it is highly not recommended.
Andaman is also known as mini India because it people from numerous state of India so you will find variety of food type from all over India in a same place.
In Andaman three networks work fine and that are BSNL, Airtel and Jio.
Internet is good here but still there are few remote areas where internet doesn't works.
It is not required to carry heavy cash because maximum of places internet works and you can just pay with upi, But still it is suggested to carry some cash for emergencys as there are places where internet doesn't work.
Sri Vijaya Puram was formerly known as Port Blair, it is where the Veer Savarkar international Airport is.
Swarajdweep island was formerly known as Havelock island.
Shaheed Dweep island was formerly known as Neil Island.
No, tourists cant visit Nicobar island as it requires special permission from the Andaman Administration.
No, it is totally prohibited for anybody to visit this Island, and any unauthorized visit there will be resulting in heavy fine and even Jail time.
No, it is not permitted but they can see them if somebody has opted for Baratang Trip.
It is suggested to carry light clothes as its an Island, it can get very humid and a one can feel very heat, even in the times of winter.
It is advised to book the Andaman tour package with a 'local' travel agency because being an Island and an tropical area here weather is very unpredictable and due to which many schedule changes and being an islander we get these updates way early and we can work around it so the guest doesn't have to suffer from anything. where as if it is not with the travel agency guests get to know of the changes after they reach in Andaman and at last minute which cause them a huge loss of money as well as time.