You may not get all of your money back, it depends on what the secondary market prices are like. If the amount you need to get back is more than what similar tickets are priced at then you will hvae to competitively price them in order to have a chance of them getting sold. There is no guarentee of a sale so if your plan is to sell your tickets and buy other ones then you could end up with extra tickets.
What is the delivery date that your confirmation email shows, that is when you can expect to receive the tickets.
