well, tomorrow i m going to visit emirates airlines for the same reason, my husband has talked to them today and they told him that they don't take the responsibility for visa upon arrival, usually u get the visa on arrival if u have an engineer or manager visa and u have spent 6 months with a valid RP in qatar. for us it is a bit less than 6 months so they told us to book hotel and tickets through them and they will arrange the visa for us. will let u know the details after I visit them.