My son was invited to a joint birthday party tomorrow. The boy who we were invited by (P) is a friend from his daycare (they all went there for three years together, but then separated in September to start kindergarten) that we’ve stayed in touch with - we’re hoping to reunite them in grade 1 at an immersion school. The other boy (E) also went to the daycare, but he and my son were never close and we haven’t stayed in touch with them - we definitely are only invited because of P. Do we need to bring two gifts?