Who in particular has been really helpful during the wedding planning process? It could be someone who is always lending an ear and shoulder while you pivot to covid regulations, or someone who is physically able to take on and complete tasks for you to ensure your wedding is a success. Is it a vendor? Someone from the bridal party? A family member?
For us, it's two members of the bridal party. One of our bridesmaids is my fiancee's best friend and she's been super supportive to her, being the ear (over super long Whatsapp calls lol) when she needed to vent or giving advice whenever she's asked for opinions. She was also able to support my fiancee in non-wedding related stresses in her life.
For me personally, I'm fairly techy and I've been to plenty of weddings where technical vendors make needless errors that could've been easily avoided if they just put in a bit of effort (like putting up a 4:3 screen while using 16:9 graphics, or a DJ triggering feedback on a mic due to standing in front of a speaker). And as someone who works events, these pet peeves bug me more than most people. Thankfully, one of my groomsmen is also super techy and with his help, we've managed to create a DIY setup for all our tech and I can trust it'll be done right without me needing to micro-manage the process on the day of.