For our sons' 1st b-day parties, we did family and close family friends only. We didn't do a lot of little kids and such as they are so young.
When we were in a smaller home, we had the party at a pizza parlor where we could reserve the back room and have everyone there.
We didn't do any games. Just had lunch, cake & ice cream and gifts. Your little one is so young, holding her attention throughout the event will be challenging enough
Have a great 1st b-day party!! Be sure to have someone on camera duty for you.
We also had a small separate cake for the b-day baby so our son could do as he wished with it ~ hands and all

While the adults had a separate cake to be able to enjoy also.