Not this year, maybe next. I've been to a couple over the last 15 yearsz including Spa (and 6h of Spa a couple of months ago). Spa is fantastic and seeing Raidillon/Eau Rouge in real life will give you goosebumps. Like others said, it's quite steep and you might have to walk a bit, so comfortable shoes are a must. You're not walking a marathon, so you don't have to overdo it, but get something you can walk in all day. Expect them to get dirty though!

The location is gorgeous but for infrastructure not ideal (once you leave the motorway it's some narrow country roads to the track), so expect it to be really busy and try to be on track early. Don't aim to be there just in time for a session.

Friday is the best day to walk around the track and figure out where everything is, so you waste no time on Saturday and Sunday. Saturday morning is alright as well if you can't go there on Friday.

Stock up on food and drinks well before the F1 race begins. The stalls are going to have massive queues, so either bring lots of water or buy it in the morning on track. During the race you can get some refills, just don't do it 30-60 minutes before the race starts.

Anyway, it's fantastic. I've been to 5 F1 races and everytime I see an F1 car drive past for the first time it's surreal. The support classes are great to watch as well and make F1 cars look even more impressive. The sound is good as well in real life. It's still loud enough but not deafening.