Going to Vegas without my toddler

I’m feeling very guilty. For context, I’m 5 months pregnant and my husbands birthday is this weekend and we planned his vegas birthday before my pregnancy. My mom lives 6 hours away and will be coming to help out. Has anyone been away from their kids? My son is 3 and a half years old. He loves my mom soo much and she’s honestly the best grandma. I know he will be happy with her but I feel guilty bc we have our routine and i’m the one that puts him to bed. Vegas is 4.5-5hrs away and I know it’s not too long of trip but a part of me just wants to stay locally now. Convince me to go Vegas lol