No, you do not receive a refund if you cancel your Oman visit visa application.

Yes, you are required to submit accommodation details when you are applying for your Oman visa.

The Oman visa requirements are:

1. A scanned copy of your passport bio page
2. A passport size photo
3. Hotel or related booking details
4. Flight booking details to the 3rd destination
5. A passport with a minimum of 6 months of validity and 4 blank pages.

Yes, you can apply for a 30 day single entry visa to Oman from Tajikistan.