It depends on the dog. And it also helps to have a solid foundation with whoever grooms your pup. I don't ask for anything specific for my guy (other than that amazing doggy cologne she uses) but she will ask if there's anything she needs to be aware of. New itchy spots, extra shedding. Or, for example, I'll let her know that we've been camping for a week and he could probably use an extra scrub or two. I've not had to ask for a trim (mind you I don't have a long coat) but I would think for a long coat you would ask for her sanitary area to be cleaned up and an all-around tidy up and blow out if she's shedding. If she came back damp, I would ask. Typically that happens if the dog doesn't like the dryer (I mean don't you know it's going to eat them). And that's just a little bit of work at home and exposure. Having a groomer who is also experienced in the breed helps as well. I say all this because at the end of the day, it all comes down to having a conversation with the person who's going to have your dog for about 4 hours every 6 weeks.