Tips for caring for swelling after a procedure + products to bring when traveling?

Hi everyone! I'm Tiara from Jakarta. So I'm planning to try a small procedure in Korea next month, but I'm worried about the swelling on the way home. I'm flying for ~5-6 hours and I'm a bit panicked about how to manage the swelling during the flight and once I get home.

Has anyone experienced this? What are some really helpful things to do or bring to reduce the swelling? I've heard that ice packs and elevation are important, but how practical are they on the plane? Are there any good local Indonesian products, or do I have to buy Korean ones?

Also, I wanted to ask, how long does it usually take for the swelling to go down? I want to know if I can look normal right away or if it takes a few more days. Thank you for sharing your experience on this!