No 1 Lounge T3

Good morning all,
My partner and I are off to JFK on the VS9 next Monday 17th, unfortunately just in Y , although I did decide to book some exit seats!
I am debating whether it's worth paying the extra for the No 1 Lounge, I see I can book it via the VS website for £22.50 pp.
Does anyone have experience of whether this is worth it, and also how busy it's likely to be on a Monday afternoon?
Any advice would be greatly appreciated.
Matt
My partner and I are off to JFK on the VS9 next Monday 17th, unfortunately just in Y , although I did decide to book some exit seats!
I am debating whether it's worth paying the extra for the No 1 Lounge, I see I can book it via the VS website for £22.50 pp.
Does anyone have experience of whether this is worth it, and also how busy it's likely to be on a Monday afternoon?
Any advice would be greatly appreciated.
Matt