Orlando?! OMG, I'm so jealous! I got back from there a week ago, and still trying to readjust to normal life
How long are you going for?
If I've got one tip, I'd recommend Uber to get about if you're not driving yourselves.. They cost a fraction of the price that the other taxi services charge, and we saved a small fortune by using them!
Anyhoo, as far as nail places go... our hotel did have a lovely looking spa that offers nail treatments, and were offering a $100 gift voucher for $80. It's about 10 mins away from the Conference Centre on I-Drive. Now, I can't comment on it's quality as I didn't use it, but if the Spa is anything like as good as the hotel was, it's definitely worth a look
Here's a link to the tripadvisor page for it, and if you go to photos > amenities, you can get an idea of what it looks like :
https://www.tripadvisor.co.uk/Hotel...Vista_Resort_Village_Spa-Orlando_Florida.html
HTH, and hope you have a fabulous time!