On the 737 on charters to Cyprus, some guys would ask for a fuel bowser that hadn't been sitting in the sun all day. Fresh from an underground storage, with condensation on the bowser was the preference. Cold fuel does have a higher density, slightly, than warm, so you can get more mass into a given volume. If you have say 22500 litres of tanks available, then at 0.8 sg thats 18000kg of fuel. At 0.79 it's only 17775 kg. I know it's only 225 kg, but it's enough to make quite a difference. I've had several instances this year when this is a enough to have to use a different destination for fuel planning purposes.
A short taxi, directs and contingency fuel then then sometimes compensate for the initial shortfall and you are able to make your planned destination without a tech stop. (Remembering that in the UK no dealy can mean 20 minutes in the hold. Binning your alternate is sometimes allowable as well.)
A good technique if you're being pushed into the cormers of max fuel capacity rather than max weights, but not always available.