Spouse Visa/VFS Islamabad appointment

[walkingintherain]

Hello guys,
Sorry if this is covered before but I am just in the process of booking an appointments for my spouse with VFS global at Islamabad centre but the earliest appointment it is showing is 8th November, much far away. I can see there is another option of "walk in without appointment for £32" but for some reasons on the website, I am unable to purchase that. Is it possible that my spouse can just go in without appointment, pay the fee there and give her fingerprints/Passport?? OR do we have to book the appointment first online??
Any expert's views would be much appreciated.
NOTE: I WOULD MUCH APPRECIATE IF THE ADMIN DOES NOT MIX THIS POST WITH MY PREVIOUS POSTS PLEASE. THEY ARE IRRELEVANT HERE.
Thank you

[CR001]

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