SDKath,
Just saw this thread and noticed you didn't get very many replies re: Maltipoos. My best friend in Law School had one (Harley) and my mom fell in love when she visited me. Shortly thereafter she adopted one from a Maltipoo rescue and "Carter" has been a member of the family ever since.
My takes on the breed:
1) VERY smart. Train, train, train. They are a very smart breed and have lots of energy...that means you must really train them hard when they are young so they know where the boundaries are. Prior to law school my friend worked for PetCo. This provided the rare opportunity to have Harley at work with her and really socialize him to many different situations. As a result she was able to take him just about anywhere and he behaved amazingly. Carter is not quite as well behaved, but also took to training very well.
2) Use crate training. These dogs are pretty small, have lots of energy, and can easily work themselves up. Crate training not only helps get potty training under control, but also provides a very good "safe" place for the dog when they get a bit too excited. Your instinct when they are puppies and new may be to make that safe place a cuddle in your arms...however, try to resist. This sort of attachment can be difficult when you have to leave them as they will whine and may not feel "safe" left alone.
2) Neither Harley nor Carter barks very much. I think a lot of that is due to their training because if prompted or encouraged they certainly can get loud. However, I think crating them when they bark or whine will limit their inappropriate barking. Try not to make too big a fuss early on as they may find it an effective way to get attention.
3) Keep your Maltipoo busy. Harley did lots of recreational dog trials and my mom use Carter as a great motivation to take some long daily walks. I can tell you that Carter's behavior on a day he's had a nice long walk is MUCH better than on days when he hasn't. These dogs need some outlet for their energy and I think because of their size providing that outlet can sometimes be overlooked.
4) Grooming/Clipping. Get a nice brush as depending on how much curl they have inherited from the poodle side, they can get knotty. Typically we have carter fully clipped every 4 months but he also gets a few touch ups in between to keep the hair out of his eyes. A good groomer should be happy doing touch ups like this for a small fee...don't get talked into monthly full clipping (it's just not necessary).
Hope that helps a bit. You've got a FUN first weekend ahead of you. Enjoy Ginger!
C.