Readers of my fascinating account of my park bag choice process will remember talk of taking metal straws in the parks.
Disney has (or is close to) phasing plastic straws out. I find the paper ones get soggy too quickly and struggle to cope with delicious Frapuccinos.
So I bought some metal straws to take with me.
I have now had an opportunity to test them on your behalves by ordering a coffee and vanilla milkshake from Five Guys.
They are narrower than the plastic straw provided, though there was no difficulty drinking the milkshake. There was no unpleasant metallic taste. One thing that does happen is that the straw, being metal, becomes extremely cold, which is marginally an issue.
@ryan1 made the good point that walking around with a drink while using a metal straw is potentially dangerous: if you fall you could impale your upper palate and die a horrible death.
@Randall1028 wisely suggested just taking two paper straws with each drink instead.
On balance I have decided to accept the counsel of them both. The metal straws will be a home-based luxury only.