Twitch Prime members get up to one year of Nintendo Switch Online
You need a paid membership to Nintendo Switch Online to play course world in Super Mario Maker 2. Pretty sure you could access course world at no extra cost in the original
Nintendo Switch Online 12-Month Individual Membership [Digital] 107521 - Best Buy
Buy Nintendo Switch Online 12 month key for cheaper! | ENEBA
How to Set Up And Use the Nintendo Online Family Plan
Nintendo Switch™ w/ Neon Blue & Neon Red Joy-Con™ + Mario Kart™ 8 Deluxe (Full Game Download) + 3 Month Nintendo Switch Online Individual Membership - Walmart.com
Nintendo Switch Online's N64 and Sega Genesis 'expansion pack' launches October 25th for $49.99 per year - The Verge