Salons

Many brides do not have a big wedding beauty team; some are more comfortable going solo to their regular stylist. Really, anyone (practiced) can do bridal updos and style. But, I do think more time should be allotted since you'll be heavily photographed (hence the rise in price). Take a look at individual stylist's album/ Insta of their completed work, and less with written reviews (haircuts are diff). There's a certain negative type that write reviews. Some salons have an in-house makeup artist so you can knock out 2 trials at once. Best wishes.

Look for an independent stylist and makeup artist. The reason salons charge so much for those large parties is because generally they are shutting normal business operations down for several hours to do work for one client. You could also call around to some that may have quoted a higher ballpark and explain the situation. You just want to get hair and makeup done, other than potentially wanting a trial the appointment probably doesnt need to be any different for such a small party that if you'd booked for a special occasion up-do, which they do during normal business hours anyway.