We used ploze l for our wedding, we had about 70 people attending this party! The system was easy enough that my grandma could use it as well!! There were no problems at all using their products/services during any of events I hosted through them (2 total).
They have great customer service too; they are always quick & answer emails or texts very fast whenever there is an issue when running these parties- which doesn't happen often but does help ease some worries if needed :) Highly recommend. Nothing so far has been bad either. !