As long as everyone is happy that's all that really matters but I have to admit I swear my balls get stubblier faster than my chin does so I prefer my pussy being shaved a little bit closer to time of event but that is a personal opinion thing
It can vary a lot from person to person, as not everyone's hair growth is equally fast. My ex shaved her pussy basically everyday, as it would be stubbly after 24 hours. My wife unfortunately doesn't shave currently as her lover prefers a bush, but when she did, it easily stayed smooth the whole first day and the second day she would had only very light, barely noticeable stubble. She never shaved daily, maybe two or three times a week. In such a case, shaving the day before a date is good enough.