it will come back from servicing looking like new.
A replacement strap is surprisingly expensive but they will re-use the original special clasp. Keep the clasp in good order, if you drop or lose it you will be sorry.
As long as you keep having it serviced they seem to extend the warranty (except for accidental damage)
You have to send it to their own workshop for servicing (or I presume an accredited dealer would post it on and add a charge)
If you are used to quartz watches you will find it stunningly inconvenient if you get a wind-up watch
Watch enthusiasts sneer at quartz Cartiers and say they are jewellery not watches.
I like the Tank as it is simple, understated and very stylish. I suppose some people like the ones encrusted with diamonds. If you have diamonds added later by some back-street jeweller it annoys Cartier and I think they quibble over guarantees or servicing or something.
If you buy it in the UK it will be hallmarked
If you buy it overseas you will either have to declare it at customs, and it will cost the same as if you'd bought it here; or you will run the constant fear of confiscation and a fine.
Be sure to put it on your household and travel insurance as a specified item, all-risks. They will want to see the receipt and/or recent valuation if you make a claim,
Don't flash it about in bars, shops or the street
Keep the original box and papers safely, where a burglar will not find them.
Browse the catalogue at your leisure before you buy one. Make sure it is from an accredited dealer.