Detach without Travel Advance

Hello,

I just received orders to sea mid April to detach in June. I had to rush my way through a suitability screening and just got the go ahead to request my advance last week. I was told that they typically like 60 days to process an advance, and I tried to explain that the delay was no fault of my own. They sat on it for a week, and said they would take action today. My detach date is June 3rd.

Although I understand I could just use my government travel card, I would much prefer the $10,000 advance. What are my options here? Do I just detach and hope I get the money dropped in my account along the way? What if I arrive and still haven't received it? My report no later than is 30 July so I'm not in a rush, to check in, but I am in a rush to detach and get out of my house so it can be put up for sale and I can minimize the number of months I need to pay two mortgages…