Not being argumentative, but I think how much ANY person whose income does not directly affect my living expenses is not my business.
If a server makes $400 a night (as in post # 11), good for them. I wouldn't want to do that work.
If anyone thinks Disney (or any) server earns too much money, feel free not to tip, - or at Disney at least, assuming there are five or fewer people in your party and you're not using the Tables in Wonderland discount card (each of which involves a mandatory gratuity) - don't tip, or tip at whatever percentage YOU consider fair.
But to answer the OP's question - either $3.75 or $3.87 an hour, at least to start. A server at the higher rate who worked 40 hours, 52 weeks a year with no tips would gross (before taxes) a grand total of $8,049.60/