Tripod is sugested. Other than that settings can vary depending on what you're trying to achieve. No fancy kit needed, 24-105 should suffice.
I hope you're not intending to spend more than one evening in Blackpool. It really is a most dismal place, and the Illuminations are far from the best light show you'll see. A pale shadow (see what I did there?) of their former glory.
Unless you're on a stag/hen do in which case you'll only be interested in getting drunk/getting your end away.
Edit- just seen you're from North Devon. IMHO it's not worth making the trip!!!