Will Spanish people understand me in Majorca if I speak to them in Latin American Spanish? Will I sound silly?

I’ve spent several weeks learning Spanish with Pimsleur because I feel that it’s the best Spanish learning software on the market. However, I’m beginning to think I may have wasted my time because it’s geared around Latin American Spanish rather than Castilian.
I’m not paranoid, I just don’t want to sound like a fool.
Thanks