I live in Cedar Park and we had our rehersal dinner at the Truluck's in the Arboretum. We were also looking at Hudson's on the Bend and The Oasis. All are really nice places and plenty of room in case you have a large party but we chose Truluck's because it's one of our favorite places. Hope this helps!
We had our rehersal dinner at Chez Zee in their banquet room. It is such a beautiful place and we absolutely LOVED it!! The banquet room is separate from the restaurant so it is private and intimate; completely perfect for a rehersal dinner. The food and dessert was also amazing and the price was completely reasonable. I know I am biased, but Chez Zee is definitely worth checking out!
All of these are great recommendations...We had ours at the original Z'Tejas location on 6th and it was perfect. And Truluck's is one of my favorite restaurants in general. I would also consider Hudson's on the Bend for your location. Good luck and congrats!
Gumbo's in Round Rock is an excellent choice, though it probably only holds about 75 in the main restaurant, but possibly 100 on the outdoor patio although it faces 620, it is very quaint with great hitory. I am close friends with the owners, Schuler and Denise Paige, www.gumbosroundrock.com
Z Tejas North is certainly an excellent choice.
If you wanted to reserve a venue and have it catered, Bella Notte in downtown Round Rock is wonderful.
Mesa Rosa on 620 between I35 and Palmer and is also an excellent choice and probably easier on the budget. They have a great outdoor patio.