Not that many rental companies in Mexico are happy to rent if they know you want to take it inti Belize. and you will have to pay double insurance one for each country should be doable and hopefully some one will come here to tell you how to do it but wether it would work out cheaper in the long run I dont know. Crystal is a local owned rental company they offer discounts for booking on line and give you free loan of a local phone (you add top up minutes at a local grocery store) Also loan you a cool box very useful. Their charges reduce for longer rentals. Also keeping it local is good.
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