Cru for wedding dinner?
I haven't been to Cru, so I can't comment. However, since you've asked for other suggestions, mine would be Eleven Madison Park. Chef Daniel Humm's French-inspired cuisine is exquisite, the wine list is excellent, service is cordial and professional, and the space is gorgeous! In my view, truly the perfect place for a wedding celebration dinner.
Best wishes on your upcoming nuptials and Bon Appetit!