No need to apologise for asking a question, there's plenty of us on here who'd be happy to help.
The gold pass definitely doesn't include a photoshoot with Jodie. In the gold pass description, it says "2 x Diamond Pass Talks of your choice up to the value of £30 each. These are given out on a first come first served basis on the day and whilst stocks last." However, Jodie's talk panel is listed as sold out, so unless SM have spaces reserved for gold pass holders you might not be able to go to hers. I think that would be a case of finding out through enquiring on the day I'm afraid.
Regarding photoshoots, all the gold pass does it gives you queue priority (in Jodie's case gold pass holders would go after the diamond pass holders). Buying a gold pass will not get you a photo with Jodie. If you buy a gold pass and want a photo with Jodie you'll have to still buy the photoshoot separately.
The 2 week prior thing relates to two autograph vouchers worth £10 each. "2 x Autograph Vouchers to be redeemed against guests selected by Showmasters around 2 weeks prior to the event. These guests will be attending the event on Friday, Saturday or Sunday, and will be charging £10 per signature at the event to non-gold pass holders, and to any Gold Pass holders choosing to purchase additional autographs from said guests." So I assume gold pass holders will be contacted to say who the £10 guests are that they can get autographs from.
As Jodie is only there for one day, getting her autograph will most likely be very difficult without a diamond pass, which are sold out. The gold pass gives you early entry, which may mean you an get a lower VQ for Jodie's autographs, so you should stand a better chance at getting her auto, but even then its still a risk that she'll get to many non-diamond pass holders. As she's not done an event of this type we dont know wether she's a fast signer or not. The gold pass will definitely help with Mandip as she isnt a diamond guest, and it will allow you to go right after the diamond pass holders at Jodie's photo session.
So to sum up, the diamond pass doesnt include a photo with Jodie, is debatable wether or not you can use it as entry to the Jodie talk (hopefully someone else can give better insight into that one), and although may give a slightly better chance at getting her auto is still a big risk without the diamond pass. One option to consider could be buying a Jodie photoshoot and pre-ordering an autograph. Although you won't get the autograph in person, you can still guarantee meeting her in the photoshoot and guarantee getting an autograph. As her talk panel is sold out I'm not sure if there's any way around that unless the gold pass inclusive talks can include hers.
Hopefully that helps, and feel free to ask if there's any more questions you have.