Booking Annual Leave Early?

I’ve been terrible most of my working life for booking annual leave (unless we had a trip planned) which usually results in me just picking random weeks mid to end of the year so I don’t lose them.

This year I’ve been a lot more organised and more or less have my full leave mapped out. Is there any issue with booking most of or all of my leave this early in the year, including even an early finish in December for Christmas ? Do any of ye do this or would you book your leave closer to the dates? But that could result in missing out if too many others get there first.