The way a lot of people think about getting a new website is, they have a certain amount of money and they think, If I pay less money for a website, I'll have extra money left over, therefore I win. And so they'll go and get a Square Space or a Wix or a Go Daddy website, and they'll think because they've saved money they're coming out ahead of the deal.
State and local governments will often post documents on their websites using Portable Document Format (PDF). But PDF documents, or those in other image based formats, are often not accessible to blind people who use screen readers and people with low vision who use text enlargement programs or different color and font settings to read computer displays.
The consequences for ignoring ADA guidelines for your website and online reservation system can be costly. In California, each instance of non-compliance is punishable by minimum damages of $4,000, plus legal fees. Class action lawsuits can multiply the damages dramatically. Most states have multiple disability laws, so it only makes sense that your website meets ADA compliance immediately.

Before you even begin designing your website, you should consider how you will use it to your advantage upon completion. Some owners make an event out of the launch of their website to create some buzz about their brand. Others line up their best customers to give testimonials on their new site via copy or video content so they, and these customers, have something to say and share on social media.
Aside from attempting to compliant for compliance’s sake, having an ADA accessible website can improve the overall user experience and site traffic. An ADA compliant site can increase your target audience (by making it easy for those with disabilities to navigate around), improve your SEO efforts (by helping search engines to more easily crawl your pages and content), and help your overall reputation.
...the full and equal enjoyment of the goods, services, facilities, or accommodations of any place of "public accommodation" by any person who owns, leases, or operates a place of public accommodation. Public accommodations include most places of lodging (such as inns and hotels), recreation, transportation, education, and dining, along with stores, care providers, and places of public displays.
Government Code §11546.7 – The requirement that state agency heads certify, every two years, that their agency’s website meets the Web Content Accessibility Guidelines, Version 2.0 or a subsequent version, at Level AA or higher, and the requirements of Sections 11135 and 7405 of the Government Code. Created by AB 434 (Baker, Chapter 780, Statutes of 2017), and sometimes referred to as AB 434.
Blind people, those with low vision, and people with other disabilities that affect their ability to read a computer display often use different technologies so they can access the information displayed on a webpage. Two commonly used technologies are screen readers and refreshable Braille displays. As discussed above, a screen reader is a computer program that speaks the text that appears on the computer display, beginning in the top-left corner. A refreshable Braille display is an electronic device that translates text into Braille characters that can be read by touch. These assistive technologies read text. They cannot translate images into speech or Braille, even if words appear in the images. For example, these technologies cannot interpret a photograph of a stop sign, even if the word “stop” appears in the image.
If you do get sued, if you immediately remediate your website, you may be able to get the lawsuit dismissed on mootness (there’s no longer anything in dispute, i.e. plaintiffs are arguing your website is inaccessible but you’ve already made it accessible). This definitely does not mean you should wait to fix your website but it does mean you may have an out.
For discussion’s sake – while I don’t know the specific nature of your videos, my guess is that they might be demonstrating various techniques or other content in which simply hearing the audio of the video wouldn’t deliver the full context of the content. If making that content accessible is something you’d want to do, you’d likely want to start with a written description of what takes place in the video. Beyond that, high contrast vector images or diagrams showcasing specific parts of the technique would certainly help.
The fastest, most certain way to be sure your website is in compliance is to contact a qualified web design agency and have them perform an audit of all your online properties. Make sure you interview the agency thoroughly first, as not all agencies are up to speed on ADA website compliance rules. A qualified web design firm will be able to identify any violations of ADA Website Compliance and outline a plan for updating your online content and properties.