There's a parsha of T'nai (stipulation), that applies to various kinyanim, halachic changes in status. The third chapter of Kiddushin has many cases of tenai when it comes to Kiddushin.
I'm wondering if anyone holds its possible to do Nisuin, the final stage of marriage, aka Chuppah, with a tenai. For example, you say you want nisuin to work on condition she doesn't sleep that day. Or on condition she doesn't own a dog. If she does, they're still in the stage of erusin.
The reason I ask is because I found two Achronim that try to prove that T'nai isn't possible by Nisuin. Rabbi Akiva Eiger (Teshuvos Tinyana #106) says because nisuin can't be done through a shliach, and Kesubos 74a teaches you need this prerequisite for tenai to be possible1. Rav Asher Weiss in Minchas Asher Bereishis #27 says tenai is only applicable to kinyanim, and he holds nisuin is a matzav, a situation, not a change in status.
1Rabbi Akiva Eiger acknowledges that Tosafos to Kesubos 48b hold nisuin can be executed through a shliach with regards to annulling her vows and inheritance (although she cannot eat Teruma yet if he is a cohen) , but he rejects that opinion in favor of Rashi, who holds nisuin can't be done through a shliach except with regards to inheriting her, but neither husband or father can annul her vows.