Travel pay and per diem rates?

ok my husband and I pcsd to Ft. Richardson on May 29, lodging was not set up so we had to provide our own lodging out of pocket. We did for 16 days until we got a house on base. on day 13 we looked in out bank and we had $2000 in travel pay. When we went to housing they told us to turn in all of our reciepts so we can be reinburst our money. So we took our receipts turned them in and the guy was telling us about per deim rates were like over 100 dollars a day for him. but our question is are we going to be reinburst what we paid in lodging or is that what the travel pay was? we paid over 800 dollars out of pocket for lodging and were expecting it back but what was 2the 2000 we got? we didnt go to travel and turn in anything before today so why did we get the 2000? and what about our lodging we paid for? are we going to get that back?