Dating a lithuanian as a US Citizen

So, for context: I'm dating a Lithuanian guy and I'm in the US 🦅 so we're both 17 and we've been together for 2 years almost 3. I'm finally going to see him in about 25 days and I'm really nervous, I'm half hispanic and half arab so I'm like not an unseasoned person, I can cook really well and I'm bringing a really nice wine for his parents, and some arab tea that he really liked that I've sent before, I was wondering: is there anything I should keep in mind before going to lithuania? I know a bit about lithuania and tried learning the language like a year ago but gave up, I know he'd skin me alive if I ever called him a russian or anything similar lol, but other than that what's something I should keep in mind traveling in lithuania and dating a lithuanian man

[We're going from right to left in Lithuania starting in Vilnius and ending in Palanga]

Oh and everyone's assuming my skin color is darker cus the hispanic side of my family but I look more like my pops who was arab, so I don't think I'll stand out too much