I reckon you'll be fine, but really what you need to do is work out what you currently spend and how that could change in retirement.
I plan on retiring next year at age 58. I need to learn how to do spreadsheets, I think, but for my meeting with a financial planner a few weeks ago, I worked out my spending over the past year, including annual subscriptions and costs as well as holidays, gifts to family and friends, lunches with friends, savings etc. That has helped me see where I'll make savings on retirement - and think about what I might spend that I don't currently.
For the past 3 months, the second thing I do every morning, after making coffee, is look at my banking app and write down - in a book as I'm very pen and paper oriented! - what I've spent the previous day, and what it was on. Actually, this process has made me very aware of how much money I've been wasting on nonsense - so I'm saving more now and will start paying more into my DC pension for the last few months of employment.
I'm single, and will be downsizing to a one-bed flat - no mortgage, lower council tax and lower energy costs. It's in a small coastal town where I can keep busy with free and low cost activities. It's important also to think ahead to how you'll spend your time, and how much that might cost.
For visiting family abroad - you might like to look at home exchange as an option as that will save hugely on accommodation costs. House/pet sitting abroad is also an option.