For those interested in an update......
It didn't go too bad actually. I want to thank everyone for their suggestions we implemented many of them.
-I was blessed that only 2 parents stayed so the fear they would all hang out didn't come to fruition
-coats were put out of the way on 2 borrowed coat stands in the spare room - perfect. Gloves and mitts firmly tucked in sleeves before being hung up.
-we went ahead with potion making and wand making. I dipped the end of some popsicle sticks in paint and had every child pick one - that broke the kids up into blue winter warlocks and golden dragons. The split up was the key to success.
-wand making - if you do this label them with the child's name because there was a lot of confusion about which was whose sat the end. Also they didn't dry so we're wrapped in tissue paper for kids as the left.
-the other key was 2 kind helpers - my mum and husband agreed to head the wand making and myself and a friendly parent spearheaded the potions (which was definitely a 2 man job).
-we removed all the chairs from the dinning room table so kids stood, the, had 2 IKEA Lack coffee table out and put a blanket under them - so some kids could kneel. The food was the worst part just because the kids not at the table were impatient grabbing things, "where's my punch?!" type of thing. I just needed more hands and probably little lunch boxes as suggested would have been better than the punch, chip bowls, sausage/cheese plates and and fruit trays on offer.
-sleeping lions game was a god send - thank you for that suggestion
-presents didn't go too bad - it was mostly small bits so not as gluttonous as I feared. We did family gifts when everyone left. I did forget one parent told us their present was in their sons backpack. We completely forgot about that so I'll text an apology today 
-it was busy and short - we were still doing presents when parents started arriving. So we didn't even get through all the activities. I'll save some for next time. All in all I think it went well.
-it wasn't kind on my wallet because I over shopped everything. Not knowing the number of parents we might be hosting really threw me. So definitely an RSVP date next time and a suggestion to drop off.
Another party survived - thanks folks! 
