Well, for many years Paul and Linda promoted the vegetarian lifestyle as a single option.
They did use some harsh methods at times - particularly featuring a difficult to watch animal abuse video before the show on at least one tour.
However thay have always seen the need to "convert" rather than "confront".
Look how the original Linda McCartney vegetarian food range was aimed at providing meat substitutes rather than pure vegetarian dishes in their own right.
Sausages, Beefburgers, Cottage Pies, Meat and gravy pies were all forms they produced amongst others.
In interviews they reported their own personal delight in watching their own "beefy" road crew tuck into those alternatives with relish when offered in the tour canteen.
More recently, of course Paul has embraced the principles of the Meat-Free Monday campaign encouraging waverers to commit to one single meatless day with a heavy emphasis on the ecological impact of reducing world demand for meat by one seventh - less demand for meat - more grain, pulse and vegetable growing - and the rather bizarre fact that browsing animals burb and break wind releasing planet destroying gases in significant amounts.
At the o2 Arena in London the usual stadium catering offered the normal range of meaty snacks but clearly some negotiations had taken place as an alternative "veggie" option of a Linda McCartney veggie burger deal was offered alongside the venues normal veggie snack option as a "guest" dish for the day. I assume similar deals are offered wherever Paul tours?
So reflecting on those thoughts, it seems reasonable to to say Paul doesn't take an extremist view of the lifestyles of others that choose to eat meat.
He seems to be happy campaigning for a gradual change rather than insisting.
In his own personal life it is reported that, wherever possible, animal products are not chosen, thing like furniture, shoes, clothing, seat coverings in vehicles etc but I've never heard of prima donna like tantrums if those personal wishes cannot be met as he moved round the world.
So I think if he were to learn of your associations he'd have a chat and make suggestions rather than show you the door.
I don't think you need to worry unduly.