It depends on the garage, but the first problem is likely to be access.
The tyres might be perished and are probably flat. Take a decent footpump, they’re only small tyres, hopefully they’ll hold air. Electric pumps need power.
Lots of rubber gloves and a vac for nesting things would be good too
How far are you moving it? You’ll probably need a winch to get it out so that you can tackle seized brakes, etc. A hand-powered Tirfor winch will do the job, but whatever you use will need an anchor, substantial tree, 4WD with electric winch, etc.
I wish you well but you may want to make plans to get it on a trailer if it needs to be moved the day you go.
With a 3-hour journey this would be my chosen route as well. It’s going to be a looooooong day if you want to make it driveable. Lots of good advice^^ if you’re determined 🙂 Hire a car trailer with a winch (and ramps), or sort a local recovery/transport company.
It’s been 40 years, but I can help with with practical Mini-type stuff and kit car stuff too (not a Moke), so please ask.
If it’s your project it’ll be fascinating and they’re suitable for kids to get involved with too. Asbestos brake linings and clutch hopefully won’t still be fitted if it’s been in recent use