Hi Erica - we haven't been there for a few years but were there in 2007. It is a beautiful site and very clean. As you enter there are a few shops and places of interest as it is set on the site of an old large house with outbuildings. There is also an indoor swimming pool. It also includes fishing lakes, golf course and garden centre. Not sure about dogs as we did not have ours at the time. The owner came to have a chat with us the evening before we left enquiring if we enjoyed our stay and to wish us a safe journey home. In over 40 years of caravanning this was the first time we have experienced this. Our other experience of this was at Lucksall in Hereford. It makes a personal touch where the owner actually takes an interest in his customers.
If we should venture to North Wales again we will certainly consider The Plassey as a site to visit based on our previous holiday there.