See you there, Jeanie!
CG, I've had a look at the area where Curtis is. I don't know how well you know Lincoln but, if you take a look at Open Street Map, it's in the bit of the High St between St Mary's St, where the rail station is and St Mark St/Tentercroft St. Curtis' shop is 3 doors up from St Mark Street, and there's space for a taxi to get off the junction and stop to let you out at the beginning of the newly pedestrianised area. There's still works of some kind going on there but you can pick your way around them.
Alternatively, if you're up to the walk from the station, over the level crossing and down the High street, I estimate it as around 400m in total. Hope to see you on Thursday!