Just be sure to sign up in advance for anything else if you can. When I got there I was told nothing was available as they had a large group at the property and they booked everything for the next few days.
Finally was able to,get the night time dune walk which was Ok. You will probably end up carrying your child as its pretty tiring.
Word of warning, don't leave your food unguarded at the outdoor tables. I had a lovely plate for breakfast set down at the table and forgot to get something. I went back inside for 20 seconds and came back to a scene from The Birds playing out on my table.
I was not impressed at all with the property. The pool had dozens of screaming kids around it (I'm sure your 5 year old and you are well behaved LOL)and the pool attendants were invisible,
Bring a torch/flashlight with you. If you are in one of the outer rooms walking back and forth in the dark can be trying.