- Credit Card churning is one way (though I'm not personally into that)
- Earning Credit Card or even Debit Card points without churning
- Actually going into debt
- Good deals on airfare
- Going solo can def. help too
- Some people have generous PTO policies or vacation time stored up
- They allocate their funds they have available to them differently than you do
- They have different funds available to them compared to you
- Their normal expenditures are different than you. In this I mean things like insurance costs (health and car/renters/homeowners), utility costs, cell phone plan costs--on that note cost for the cell phone itself, gasoline costs (average MPG can play a role in that as well as gasoline costs of the gas station where they fill up) and so many more things.
- They have money from some other means (legal settlement, inheritance, someone else fronting the bills, extreme saving from some other point in their lives, etc).
- Etc.
Now you can def. ask your friend you know how they do it because you'd like to be able to do it as well. Just know that people do sometimes fudge the truth, alter the truth or don't tell the full truth. That's not to say your friend would do this but it does happen.
I say this with kindness it could be that whatever funds you have available to you simply can't afford Disney as a destination no matter what you do to try and save for it. Others have def. given good advice so you can always put pen to a paper and see if any of that can work for you.
Also I'll mention that for some people they are working with things available to them. I absolutely benefited from my husband traveling. Not only the time we had the Companion Pass (where we used it for visiting up in MD in 2016, ski trip to CO in 2017, our 2017 WDW trip, Vegas 2017 trip (work trip extended), NYC trip in 2017 (work trip extended)) but also most recently at the beginning of the month his company paid for my plane ticket (and of course his too) to LA so he could go apartment hunting (as he's about to do a field assignement for 6months+ there) and we squeezed in a 3 day DLR trip. We'll likely be able to sqeeze in another trip there and I'll be using his plane ticket he would normally use to come home and instead I'll go out there.
Well you don't truly know that the friend makes the same amount of money as you UNLESS you were hired at the exact same time and you KNOW it was with the same starting salary AND neither of you have earned raises or bonuses since you were hired. OR you know because your friend told you just how much money they make and you trust they are telling the truth.
I mean this respectfully but you seem to be focusing on the materialistic things your friend has. Looks can be deceiving. For example I have a Michael Kors bag. The bag was like $150. Did I pay that? Nope. I paid something like $30 for it at DSW because it was 80% off. But I guess someone could look at me and think I spent a lot of money for it. I didn't. But truth is even if I paid $150 for it I may have done that for a variety of reasons through a variety of means.
I know a person that goes to Japan for a month sometimes two months each year and just travels around when he's there. I could spend a lot more of my time wondering just how he could do it but honestly? I think it's cool and I get to see some amazing photos he takes with his nicer camera (a lot of long exposure ones too).