Hi, i am sorry if i sounded too zealous... seriously in the world of photography, nothing is really impossible... its whether or not the PG is competent and equipped with the necessary tools.
Elise, do check out with your PG with his/her arsenal of tools... Seriously, if a PG just brushes it off due to poor lightning... i dun think its really professional...
For me, i have personally encountered an incident when an amateur PG really ruined a happy occasion for the couple... the colours, tone, exposure, composition were way off... and using direct flash photography to capture couple in broad daylight? I tot it was supposed to be fill flash. however when i saw the photos, i nearly fainted... i won't name the PG, i believe he is trying to improve. On hindsight, even i could do a better job... though i am really an amateur to begin with as well. I brought along a PnS camera F200EXR and they commented that my photos were way better...
this is my two cents in all... All the best.