A Scuba diving refresher course is generaly a good idea if you have been inactive in diving for a period of 6 months or more.
A dive refresher will cover key dive safety drills and help you re discover neutral buoyancy techniques.
Its really worth doing if you are setting off on a holiday and you want to avoid pre dive worry and stress and want be able to relax in the comfort of knowing that your skills are up to date.
You can equate not diving for some time to not driving for sometime, if you don’t use it you can lose it.
Typical scuba refresher courses are completed in swimming pools and confined sections of open water and generally last 1-2 hours.
Here you can find full information on the Big Squid Refresher Course