It might be a little too casual, but Serendipity 3 (like the one in NYC) is at Caesars Palace, right in front of the main entrance to the hotel. I go there for an occasional Frrrozen hot chocolate and the last time I was there, I noticed the large outdoor patio was sectioned off for a private wedding party.
The patio overlooks the LV Strip and also has misters.
It may be something to inquire about. Serendipity 3 has great desserts and if budget is a concern, you could just do a cocktail / dessert reception. However the food is also fairly inexpensive too--and kid friendly in case that's a concern.
Raku is a great restaurant, I agree.
Here are a few other suggestions:
- Lotus of Siam for Thai food. The chef, Saipin Chutima wone Best Chef, Southwest at the James Beard Awards this year. It's a very casual restaurant, not too expensive and excellent (and exotic) food.
- Ichiza located on Spring Mountain in China Town, Ichiza is open late and serves smaller, shareable portions of very exotic cuisine. It's casual and the feel of the place is a little loungy, but the food is great.
- Joel Robuchon in MGM Grand is the only three Michelin-star restaurant on the Las Vegas Strip. It is fine dining, at its finest and is not cheap, but the experience is extraordinary.
- For a less-formal dining experience but still from Joel Robuchon is L'Atelier. This restaurant neighbors Joel Robuchon but is a lot more casual and the best place to sit is at the bar, where you can watch open kitchen.
- For a bachelorette party, Nove Italiano in the Palms is a pretty good option. They feature locally grown organic produce and fresh made pastas. Italian steakhouse with modern decor and a great view of the LV Strip.
Lotus of Siam