So I'm looking to book an award flight using AVIOS to get from SAT-MIA. When I search it tells me there is no availability however it let's me book: SAT-DFW then DFW-MIA My fear is that my luggage won't transfer to MIA properly. I know airlines book connections and transfer luggage correctly all the time, however because I'm doing it myself I'm a little fearful. I should be ok correct? (45 mins between flights) Also will I get charged the checked bag fee for each segment or just the once?