Hi. I'm taking my DD10 to London for 2 nights. Going to get the London Pass as for what we want to see, we save a lot of money. I'm getting mine with a travel card. I now know that it's free for under 11's to travel on the underground and that you can buy a photo card for £10. I'm just wanting to know if we need this? The £10 is an administration fee and I won't be using it again until April and July next year so do we need it? She's average height for her age but I'm worried they think I'm attempting to dupe them. Any advice would be appreciated.