My mother is being cared for at home and has terminal cancer. My stepfather is in a lovely nursing home. Thought it would be nice to have a memorial reception with food or snacks for my mom at the nursing home so my stepfather can be included since it is his wife. I'm not sure I can handle the responsibility of taking him out of nursing home for day to have him come to services. I did something similar as a "house warming" party for him when he moved in but that was long before COVID. Would it be weird for guests to come to nursing home for funeral reception?
You could prepare appetizers, a main dish, dessert and drinks to serve or have it catered. You could even skip a main dish if you want to keep it simple.
Music would be a nice addition. I have been to memorial services with a pianists and a singer which is lovely but I have also been to some with recorded music.
I lost my best friend last year. One of her favorite songs since we were teenagers was Let It Be. That song was played at her memorial service, along with a couple of others. Many people chose to play a favorite song of the person that they are remembering.
A friend did that when her FIL died. Small family service and luncheon at MIL's AL, and a larger event at the mortuary on another day.
They allowed us to use it for Thanksgiving and Christmas parties, Mother's Day and the like.
Ask. There may be a limit on how many folks you can have in attendance.