I dunno, I get the sense that there's something more serious at play here. If Dylan has, as reported, some kind of degenerative muscular condition, then the future is bleak and it feels to me that Suzy is going all out to make these years extra special (like a bucket list of sorts?) for them both while he can still enjoy it and obviously has the money to do it too.
So while it might look from the outside as though she's just showing off/splashing the cash, she's actually going overboard on all this stuff because she's deeply scared for his/their future? Which might explain all the manic binge blowouts and public displays of whatever. She's in a terrifying place personally and emotionally, and her way of dealing with it is by trying to prove to the world (and Dylan maybe?) that she's fine.
Not sure why, but I just don't get the same money-grubbing narcissistic desperation from her as the other instafloggers, and if it's true about him being unwell then I think all this over the top stuff makes sense and to be honest, my heart goes out to her.