I lived in Oman until 2002 and things may have changed since then but you used to need to get a road permit to drive accross the border. I dont forsee any problems but you will need to organise this before you travel - best bet would be to contact the embassy. Oman is trying to open itself up to tourism now so this may well havechanged.
Getting into Oman from the UAE is no problem. I did it last September. You must stop, pay for a Visa, and get your passport stamped. No problems at all. You must also have your vehicle information with you.
So sounds like from the posting:
1. No road permit is required
2. Visa's can easily be obtained at the border into Oman
So one further question. Finding it very difficult to get a rental company to allow me to take car from Dubai to Oman. I thought National would, but apparently they have changed policy. Hertz will not either. Any other companys that will allow you to take their rental car across, and is there additonal fee?
Things have changed recently in the last few months. Friends who went last week said there is now a definite border post between Oman and UAE instead of the previous arrangement. I would check first.
Regarding rental cars what about AVIS.
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Sorry - hit wrong keys.
The Red Bus does not run that far.
Best guess it will take 5 -> 6 hours.
Will you taking the car back to AD from Oman or leaving it there as I think that some of the bigger car rental companies will allow (and charge) for renting the car in AD and leaving it Oman. I know that you can do this from Dubai. Google to find AD rental companies.
One of the keys to the above is to make sure that the rental insurance covers you in Oman, you will not be permitted to enter Oman without coverage there. You can buy insurance at the border post, but of course they will charge you big time!
UK passport holders are on list one which means you get visa, on demand, at the border post.
Dubai -> Muscat
Just after Hatta is the UAE Border Post.
Get an UAE exit stamp in your passport. Drive on.
Go through security checkpoint (Omani) and get form, keep it.
Drive to Oman Border Post (big building) and park the car.
Queue up to get visa form and pay OMR6.
GCC residents only pay OMR3 per passport.
Fill in the Visa form and queue up again to get Omani entry stamp in your passport.
Back to the car and drive through passport control on the side of the building.
Drive on ~2kms and hand in your security pass that you got above.
Muscat -> Dubai
Arrive at Omani Border Post where you got the entry visa.
Just before you get there stop at small hut and get an exit pass for OMR2.
Drive up to where you get exit stamp in your passport, it’s on the side of the building.
They will stamp your passport and stamp your exit pass, keep it.
Drive on & you will eventually get another small hut where you hand in the exit pass.
Next stop is UAE Border Post. Get Entry stamp in your passport.
At the same window they will give you entry pass.
Drive to entry gate and hand in your entry pass and you’re done.