Wishing you safe travels and a fantastic time in HHI!!
I have to say that we love BG. It's definitely not Disney but it's great to have season passes and it's only 45 miles from driveway to parking lot! We don't do a full day unless someone's visiting. We get there at opening and are out by 2 or 3 and only hit what we want.
Europe in the Air ~ my gf and I both said it was BG's version of Soarin' ~ it's ok and my 5 yr old LOVES it so we end up on it every visit.
Alpengeist & Lochness ~ I can do them if I'm towards the front. Generally the back half I feel like I'm thrown around too much.
Apollo & Griffon ~ No problems sitting anywhere. LOVE

the hang time on Griffon! I've done the front row, I've done the entire ride hands up (just to freak out my sister, LOL) and I prefer 2nd or 3rd row because first row is way too much wind ~ this is gonna sound ridiculous, but I feel like my eyelids are "fluttering" if that makes any sense!
Did you do Mach Tower? I love the Mix It Up show (in Italy), Pet Shenanigans show and
Das Festhaus is definitely a fave restaurant on the rare occasion we eat at the park.
I know you said it was low crowds when you went and there were only 2 of you, so it may not have been anything you'd notice, but I hate that BG doesn't have someone directing people to rows on the coasters ~ not so much Griffin, but the other ones. It's irritating to be in a group and switching spots with other people so everyone ends up on the same ride. Too many empty seats too.