Tipping...

So I'm going over my tip list and I mentioned to my mom who we were tipping...
hair and makeup
flower delivery
church ppl
limos
photographers
videographer
maitre'd
bridal attendants
she and my aunts started freaking out saying that i'm not supposed to tip the photographers or videographers... they were like... absolutely not! so now i'm confused, i thought you were supposed to tip photo/video??