Is it possible to remove this excess fat and skin?

Did you ever have any surgeries as a teenager? Anything for pilonidal disease? It is hard to tell with the pictures. If not, correction of deformities like that can often be done with a mixture of weight loss, liposculpting and surgery.

You might try EMSCulpt to help reshape your buttocks with no surgery and no downtime. Once reshaped, then see if liposuction is needed in the banana roll areas.

I would suggest doing this procedure once you return from your trip. At 10 days, you will not be wearing bathing suits or swimming in any kind of water. You will still be wearing compression garments 24 hours daily except to shower and wash the garment. Plus, you still may be sore and not enjoy...