Day 4 (1st May): Alpaca trek at Innerleithen and exploring Edinburgh. This is one of my favorite days in the UK - I booked a morning (10 AM - 11 AM) Alpaca trek with Velvet hall alpacas (15 pounds), located at Innerleithen (a small town 40 kms from Edinburgh). You can take the direct bus X62 from North Bridge bus stop which will directly take to the Velvet hall (12 pounds round trip). The place is run by a wonderful couple - who are extremely passionate about their work and will show you around their beautiful estate and give you an insight into their tweed production. Though the trek was only for an hour, I ended up staying there for 2.5 hours - just admiring their farm and the beautiful beasts in it! If you're hard-pressed for time, you can consider going to Bobcat Alpacas, which is in Edinburgh itself - but they don't do treks all days of the week so check if it fits your schedule.The second half of the day was mostly about going around Edinburgh that included- a quick look at the famous Edinburgh castle, admiring Greyfriars Bobby statue (commemoration of a Skye Terrier who guarded his owner's grave for 14 years!) and enjoying live Celtic music at Sandy's Bell.At the end of the day, I took a flight to Belfast (2500 INR). You can easily catch a tram or a bus to the airport at 6 pounds per ticket, which will directly drop you at the airport.Tip: Click a selfie with Pearson if you visit the Velvet Hall Alpacas!