I live about 40 mins from Blackpool. We went lots as children, but I rarely take my children now.
If we do go it’s to walk through the illuminations with a bag of chips. The pleasure beach is great fun, clean and tidy inside. There are attractions such as sea world, ripleys believe it or not, the proms etc. There are many bars and eateries if you wanted to spend the day/night drinking- which is a common pastime for the majority. There are a couple of theatres that have shows on regularly, the tower to visit plus a decent circus that my kids enjoy. Lots to do in the daytime if you’ve got a wallet full of cash.
However, the town itself is very run down. You will inevitably see people heavily under the influence of drugs and alcohol walking the streets day and night. The streets themselves are dirty and unkempt. Many, many homeless people. Plenty of unsavoury types unfortunately. In fact, the life expectancy of people that live in Blackpool is one of the lowest in the Uk.
Personally, I wouldn’t be there after evening time, but it depends if your just after attractions in the daytime and an air b n b at night.
There are a couple of haven sites not far from Blackpool, Martin mere and Cala Gran- we’ve been to both for reasonable prices and they are nice. If you have a car you’re not far from lytham, St Annes’s, Southport etc, all nice places to visit for the day.
Enjoy- wherever you end up!