I’m not buying Denise planned the wedding 2 days before the wedding , probably more like she planned the wedding in 2 days.
If you have enough money to throw at people you can get flowers, catering, a venue, and servers in a pinch — the wedding also took place on a Sunday, so the venue would have been easier to get. Besides, it was a Bravo event of sorts so was likely paid at least in part by them.
And since it was an event filmed for the show it also meant the HWs had to show up or not get paid, and since Mauricio’s business anniversary was planned way in advance it wasn’t the kind of thing Kyle would skip out on.
The HWs are probably required to stay for a certain length of time, like a minimum of 2 or 3 hrs, so the fact that Denise was abysmally late to her own wedding was probably not that big of a deal. The producers may have even “encouraged” her to take her own sweet time for dramatic effect, but who knows? It didn’t negatively impact her special day and things went off relatively smoothly and she was able to put her own spin on it and make it her own.