I have to present my IATA card when collecting discounted passes at both Disney and Universal along with the confirmation that they faxed upon booking them, that is the only photo id i carry with me.

My driving licence is the old type without a photo and my wife would probably only have her Costco membership card with her phtograph.

We have only ever taken our passports with us to Pleasure Island due to their strict id policy for alchoholic drinks.Wouldn't carry them otherwise as i've never needed them to cash travellers cheques or to use Visa or mastercard.

I did have to present my passport to pay with Visa in Ibiza last year, and that is becoming quite common due to credit card fraud in Spain.